845000000

素因数分解:

$2^6\times 5^7\times {\mathrm{13}}^2$

素因数の和:73

約数の個数: 168

約数和(自身を含む): 2269623096

約数和(自身を除く): 1424623096

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 125, 130, 160, 169, 200, 208, 250, 260, 320, 325, 338, 400, 416, 500, 520, 625, 650, 676, 800, 832, 845, 1000, 1040, 1250, 1300, 1352, 1600, 1625, 1690, 2000, 2080, 2500, 2600, 2704, 3125, 3250, 3380, 4000, 4160, 4225, 5000, 5200, 5408, 6250, 6500, 6760, 8000, 8125, 8450, 10000, 10400, 10816, 12500, 13000, 13520, 15625, 16250, 16900, 20000, 20800, 21125, 25000, 26000, 27040, 31250, 32500, 33800, 40000, 40625, 42250, 50000, 52000, 54080, 62500, 65000, 67600, 78125, 81250, 84500, 100000, 104000, 105625, 125000, 130000, 135200, 156250, 162500, 169000, 200000, 203125, 211250, 250000, 260000, 270400, 312500, 325000, 338000, 406250, 422500, 500000, 520000, 528125, 625000, 650000, 676000, 812500, 845000, 1000000, 1015625, 1056250, 1250000, 1300000, 1352000, 1625000, 1690000, 2031250, 2112500, 2500000, 2600000, 2640625, 3250000, 3380000, 4062500, 4225000, 5000000, 5281250, 6500000, 6760000, 8125000, 8450000, 10562500, 13000000, 13203125, 16250000, 16900000, 21125000, 26406250, 32500000, 33800000, 42250000, 52812500, 65000000, 84500000, 105625000, 169000000, 211250000, 422500000, 845000000]

約数ペア:

[(1, 845000000), (2, 422500000), (4, 211250000), (5, 169000000), (8, 105625000), (10, 84500000), (13, 65000000), (16, 52812500), (20, 42250000), (25, 33800000), (26, 32500000), (32, 26406250), (40, 21125000), (50, 16900000), (52, 16250000), (64, 13203125), (65, 13000000), (80, 10562500), (100, 8450000), (104, 8125000), (125, 6760000), (130, 6500000), (160, 5281250), (169, 5000000), (200, 4225000), (208, 4062500), (250, 3380000), (260, 3250000), (320, 2640625), (325, 2600000), (338, 2500000), (400, 2112500), (416, 2031250), (500, 1690000), (520, 1625000), (625, 1352000), (650, 1300000), (676, 1250000), (800, 1056250), (832, 1015625), (845, 1000000), (1000, 845000), (1040, 812500), (1250, 676000), (1300, 650000), (1352, 625000), (1600, 528125), (1625, 520000), (1690, 500000), (2000, 422500), (2080, 406250), (2500, 338000), (2600, 325000), (2704, 312500), (3125, 270400), (3250, 260000), (3380, 250000), (4000, 211250), (4160, 203125), (4225, 200000), (5000, 169000), (5200, 162500), (5408, 156250), (6250, 135200), (6500, 130000), (6760, 125000), (8000, 105625), (8125, 104000), (8450, 100000), (10000, 84500), (10400, 81250), (10816, 78125), (12500, 67600), (13000, 65000), (13520, 62500), (15625, 54080), (16250, 52000), (16900, 50000), (20000, 42250), (20800, 40625), (21125, 40000), (25000, 33800), (26000, 32500), (27040, 31250)]