390000000

素因数分解:

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

素因数の和:65

約数の個数: 256

約数和(自身を含む): 1394527680

約数和(自身を除く): 1004527680

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, 192, 195, 200, 208, 240, 250, 260, 300, 312, 320, 325, 375, 384, 390, 400, 416, 480, 500, 520, 600, 624, 625, 640, 650, 750, 780, 800, 832, 960, 975, 1000, 1040, 1200, 1248, 1250, 1300, 1500, 1560, 1600, 1625, 1664, 1875, 1920, 1950, 2000, 2080, 2400, 2496, 2500, 2600, 3000, 3120, 3125, 3200, 3250, 3750, 3900, 4000, 4160, 4800, 4875, 4992, 5000, 5200, 6000, 6240, 6250, 6500, 7500, 7800, 8000, 8125, 8320, 9375, 9600, 9750, 10000, 10400, 12000, 12480, 12500, 13000, 15000, 15600, 15625, 16000, 16250, 18750, 19500, 20000, 20800, 24000, 24375, 24960, 25000, 26000, 30000, 31200, 31250, 32500, 37500, 39000, 40000, 40625, 41600, 46875, 48000, 48750, 50000, 52000, 60000, 62400, 62500, 65000, 75000, 78000, 78125, 80000, 81250, 93750, 97500, 100000, 104000, 120000, 121875, 124800, 125000, 130000, 150000, 156000, 156250, 162500, 187500, 195000, 200000, 203125, 208000, 234375, 240000, 243750, 250000, 260000, 300000, 312000, 312500, 325000, 375000, 390000, 400000, 406250, 468750, 487500, 500000, 520000, 600000, 609375, 624000, 625000, 650000, 750000, 780000, 812500, 937500, 975000, 1000000, 1015625, 1040000, 1200000, 1218750, 1250000, 1300000, 1500000, 1560000, 1625000, 1875000, 1950000, 2000000, 2031250, 2437500, 2500000, 2600000, 3000000, 3046875, 3120000, 3250000, 3750000, 3900000, 4062500, 4875000, 5000000, 5200000, 6000000, 6093750, 6500000, 7500000, 7800000, 8125000, 9750000, 10000000, 12187500, 13000000, 15000000, 15600000, 16250000, 19500000, 24375000, 26000000, 30000000, 32500000, 39000000, 48750000, 65000000, 78000000, 97500000, 130000000, 195000000, 390000000]

約数ペア:

[(1, 390000000), (2, 195000000), (3, 130000000), (4, 97500000), (5, 78000000), (6, 65000000), (8, 48750000), (10, 39000000), (12, 32500000), (13, 30000000), (15, 26000000), (16, 24375000), (20, 19500000), (24, 16250000), (25, 15600000), (26, 15000000), (30, 13000000), (32, 12187500), (39, 10000000), (40, 9750000), (48, 8125000), (50, 7800000), (52, 7500000), (60, 6500000), (64, 6093750), (65, 6000000), (75, 5200000), (78, 5000000), (80, 4875000), (96, 4062500), (100, 3900000), (104, 3750000), (120, 3250000), (125, 3120000), (128, 3046875), (130, 3000000), (150, 2600000), (156, 2500000), (160, 2437500), (192, 2031250), (195, 2000000), (200, 1950000), (208, 1875000), (240, 1625000), (250, 1560000), (260, 1500000), (300, 1300000), (312, 1250000), (320, 1218750), (325, 1200000), (375, 1040000), (384, 1015625), (390, 1000000), (400, 975000), (416, 937500), (480, 812500), (500, 780000), (520, 750000), (600, 650000), (624, 625000), (625, 624000), (640, 609375), (650, 600000), (750, 520000), (780, 500000), (800, 487500), (832, 468750), (960, 406250), (975, 400000), (1000, 390000), (1040, 375000), (1200, 325000), (1248, 312500), (1250, 312000), (1300, 300000), (1500, 260000), (1560, 250000), (1600, 243750), (1625, 240000), (1664, 234375), (1875, 208000), (1920, 203125), (1950, 200000), (2000, 195000), (2080, 187500), (2400, 162500), (2496, 156250), (2500, 156000), (2600, 150000), (3000, 130000), (3120, 125000), (3125, 124800), (3200, 121875), (3250, 120000), (3750, 104000), (3900, 100000), (4000, 97500), (4160, 93750), (4800, 81250), (4875, 80000), (4992, 78125), (5000, 78000), (5200, 75000), (6000, 65000), (6240, 62500), (6250, 62400), (6500, 60000), (7500, 52000), (7800, 50000), (8000, 48750), (8125, 48000), (8320, 46875), (9375, 41600), (9600, 40625), (9750, 40000), (10000, 39000), (10400, 37500), (12000, 32500), (12480, 31250), (12500, 31200), (13000, 30000), (15000, 26000), (15600, 25000), (15625, 24960), (16000, 24375), (16250, 24000), (18750, 20800), (19500, 20000)]