20280000000

素因数分解:

$2^9\times 3^1\times 5^7\times {\mathrm{13}}^2$

素因数の和:82

約数の個数: 480

約数和(自身を含む): 73128328416

約数和(自身を除く): 52848328416

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 32, 39, 40, 48, 50, 52, 60, 64, 65, 75, 78, 80, 96, 100, 104, 120, 125, 128, 130, 150, 156, 160, 169, 192, 195, 200, 208, 240, 250, 256, 260, 300, 312, 320, 325, 338, 375, 384, 390, 400, 416, 480, 500, 507, 512, 520, 600, 624, 625, 640, 650, 676, 750, 768, 780, 800, 832, 845, 960, 975, 1000, 1014, 1040, 1200, 1248, 1250, 1280, 1300, 1352, 1500, 1536, 1560, 1600, 1625, 1664, 1690, 1875, 1920, 1950, 2000, 2028, 2080, 2400, 2496, 2500, 2535, 2560, 2600, 2704, 3000, 3120, 3125, 3200, 3250, 3328, 3380, 3750, 3840, 3900, 4000, 4056, 4160, 4225, 4800, 4875, 4992, 5000, 5070, 5200, 5408, 6000, 6240, 6250, 6400, 6500, 6656, 6760, 7500, 7680, 7800, 8000, 8112, 8125, 8320, 8450, 9375, 9600, 9750, 9984, 10000, 10140, 10400, 10816, 12000, 12480, 12500, 12675, 12800, 13000, 13520, 15000, 15600, 15625, 16000, 16224, 16250, 16640, 16900, 18750, 19200, 19500, 19968, 20000, 20280, 20800, 21125, 21632, 24000, 24375, 24960, 25000, 25350, 26000, 27040, 30000, 31200, 31250, 32000, 32448, 32500, 33280, 33800, 37500, 38400, 39000, 40000, 40560, 40625, 41600, 42250, 43264, 46875, 48000, 48750, 49920, 50000, 50700, 52000, 54080, 60000, 62400, 62500, 63375, 64000, 64896, 65000, 67600, 75000, 78000, 78125, 80000, 81120, 81250, 83200, 84500, 86528, 93750, 96000, 97500, 99840, 100000, 101400, 104000, 105625, 108160, 120000, 121875, 124800, 125000, 126750, 129792, 130000, 135200, 150000, 156000, 156250, 160000, 162240, 162500, 166400, 169000, 187500, 192000, 195000, 200000, 202800, 203125, 208000, 211250, 216320, 234375, 240000, 243750, 249600, 250000, 253500, 259584, 260000, 270400, 300000, 312000, 312500, 316875, 320000, 324480, 325000, 338000, 375000, 390000, 400000, 405600, 406250, 416000, 422500, 432640, 468750, 480000, 487500, 499200, 500000, 507000, 520000, 528125, 540800, 600000, 609375, 624000, 625000, 633750, 648960, 650000, 676000, 750000, 780000, 800000, 811200, 812500, 832000, 845000, 937500, 960000, 975000, 1000000, 1014000, 1015625, 1040000, 1056250, 1081600, 1200000, 1218750, 1248000, 1250000, 1267500, 1297920, 1300000, 1352000, 1500000, 1560000, 1584375, 1600000, 1622400, 1625000, 1690000, 1875000, 1950000, 2000000, 2028000, 2031250, 2080000, 2112500, 2163200, 2400000, 2437500, 2496000, 2500000, 2535000, 2600000, 2640625, 2704000, 3000000, 3046875, 3120000, 3168750, 3244800, 3250000, 3380000, 3750000, 3900000, 4000000, 4056000, 4062500, 4160000, 4225000, 4800000, 4875000, 5000000, 5070000, 5200000, 5281250, 5408000, 6000000, 6093750, 6240000, 6337500, 6489600, 6500000, 6760000, 7500000, 7800000, 7921875, 8000000, 8112000, 8125000, 8450000, 9750000, 10000000, 10140000, 10400000, 10562500, 10816000, 12000000, 12187500, 12480000, 12675000, 13000000, 13203125, 13520000, 15000000, 15600000, 15843750, 16224000, 16250000, 16900000, 19500000, 20000000, 20280000, 20800000, 21125000, 24000000, 24375000, 25350000, 26000000, 26406250, 27040000, 30000000, 31200000, 31687500, 32448000, 32500000, 33800000, 39000000, 39609375, 40000000, 40560000, 42250000, 48750000, 50700000, 52000000, 52812500, 54080000, 60000000, 62400000, 63375000, 65000000, 67600000, 78000000, 79218750, 81120000, 84500000, 97500000, 101400000, 104000000, 105625000, 120000000, 126750000, 130000000, 135200000, 156000000, 158437500, 162240000, 169000000, 195000000, 202800000, 211250000, 253500000, 260000000, 270400000, 312000000, 316875000, 338000000, 390000000, 405600000, 422500000, 507000000, 520000000, 633750000, 676000000, 780000000, 811200000, 845000000, 1014000000, 1267500000, 1352000000, 1560000000, 1690000000, 2028000000, 2535000000, 3380000000, 4056000000, 5070000000, 6760000000, 10140000000, 20280000000]

約数ペア:

[(1, 20280000000), (2, 10140000000), (3, 6760000000), (4, 5070000000), (5, 4056000000), (6, 3380000000), (8, 2535000000), (10, 2028000000), (12, 1690000000), (13, 1560000000), (15, 1352000000), (16, 1267500000), (20, 1014000000), (24, 845000000), (25, 811200000), (26, 780000000), (30, 676000000), (32, 633750000), (39, 520000000), (40, 507000000), (48, 422500000), (50, 405600000), (52, 390000000), (60, 338000000), (64, 316875000), (65, 312000000), (75, 270400000), (78, 260000000), (80, 253500000), (96, 211250000), (100, 202800000), (104, 195000000), (120, 169000000), (125, 162240000), (128, 158437500), (130, 156000000), (150, 135200000), (156, 130000000), (160, 126750000), (169, 120000000), (192, 105625000), (195, 104000000), (200, 101400000), (208, 97500000), (240, 84500000), (250, 81120000), (256, 79218750), (260, 78000000), (300, 67600000), (312, 65000000), (320, 63375000), (325, 62400000), (338, 60000000), (375, 54080000), (384, 52812500), (390, 52000000), (400, 50700000), (416, 48750000), (480, 42250000), (500, 40560000), (507, 40000000), (512, 39609375), (520, 39000000), (600, 33800000), (624, 32500000), (625, 32448000), (640, 31687500), (650, 31200000), (676, 30000000), (750, 27040000), (768, 26406250), (780, 26000000), (800, 25350000), (832, 24375000), (845, 24000000), (960, 21125000), (975, 20800000), (1000, 20280000), (1014, 20000000), (1040, 19500000), (1200, 16900000), (1248, 16250000), (1250, 16224000), (1280, 15843750), (1300, 15600000), (1352, 15000000), (1500, 13520000), (1536, 13203125), (1560, 13000000), (1600, 12675000), (1625, 12480000), (1664, 12187500), (1690, 12000000), (1875, 10816000), (1920, 10562500), (1950, 10400000), (2000, 10140000), (2028, 10000000), (2080, 9750000), (2400, 8450000), (2496, 8125000), (2500, 8112000), (2535, 8000000), (2560, 7921875), (2600, 7800000), (2704, 7500000), (3000, 6760000), (3120, 6500000), (3125, 6489600), (3200, 6337500), (3250, 6240000), (3328, 6093750), (3380, 6000000), (3750, 5408000), (3840, 5281250), (3900, 5200000), (4000, 5070000), (4056, 5000000), (4160, 4875000), (4225, 4800000), (4800, 4225000), (4875, 4160000), (4992, 4062500), (5000, 4056000), (5070, 4000000), (5200, 3900000), (5408, 3750000), (6000, 3380000), (6240, 3250000), (6250, 3244800), (6400, 3168750), (6500, 3120000), (6656, 3046875), (6760, 3000000), (7500, 2704000), (7680, 2640625), (7800, 2600000), (8000, 2535000), (8112, 2500000), (8125, 2496000), (8320, 2437500), (8450, 2400000), (9375, 2163200), (9600, 2112500), (9750, 2080000), (9984, 2031250), (10000, 2028000), (10140, 2000000), (10400, 1950000), (10816, 1875000), (12000, 1690000), (12480, 1625000), (12500, 1622400), (12675, 1600000), (12800, 1584375), (13000, 1560000), (13520, 1500000), (15000, 1352000), (15600, 1300000), (15625, 1297920), (16000, 1267500), (16224, 1250000), (16250, 1248000), (16640, 1218750), (16900, 1200000), (18750, 1081600), (19200, 1056250), (19500, 1040000), (19968, 1015625), (20000, 1014000), (20280, 1000000), (20800, 975000), (21125, 960000), (21632, 937500), (24000, 845000), (24375, 832000), (24960, 812500), (25000, 811200), (25350, 800000), (26000, 780000), (27040, 750000), (30000, 676000), (31200, 650000), (31250, 648960), (32000, 633750), (32448, 625000), (32500, 624000), (33280, 609375), (33800, 600000), (37500, 540800), (38400, 528125), (39000, 520000), (40000, 507000), (40560, 500000), (40625, 499200), (41600, 487500), (42250, 480000), (43264, 468750), (46875, 432640), (48000, 422500), (48750, 416000), (49920, 406250), (50000, 405600), (50700, 400000), (52000, 390000), (54080, 375000), (60000, 338000), (62400, 325000), (62500, 324480), (63375, 320000), (64000, 316875), (64896, 312500), (65000, 312000), (67600, 300000), (75000, 270400), (78000, 260000), (78125, 259584), (80000, 253500), (81120, 250000), (81250, 249600), (83200, 243750), (84500, 240000), (86528, 234375), (93750, 216320), (96000, 211250), (97500, 208000), (99840, 203125), (100000, 202800), (101400, 200000), (104000, 195000), (105625, 192000), (108160, 187500), (120000, 169000), (121875, 166400), (124800, 162500), (125000, 162240), (126750, 160000), (129792, 156250), (130000, 156000), (135200, 150000)]