64902500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1997}}^1$

素因数の和:2034

約数の個数: 60

約数和(自身を含む): 152922924

約数和(自身を除く): 88020424

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 625, 650, 1250, 1300, 1625, 1997, 2500, 3250, 3994, 6500, 7988, 8125, 9985, 16250, 19970, 25961, 32500, 39940, 49925, 51922, 99850, 103844, 129805, 199700, 249625, 259610, 499250, 519220, 649025, 998500, 1248125, 1298050, 2496250, 2596100, 3245125, 4992500, 6490250, 12980500, 16225625, 32451250, 64902500]

約数ペア:

[(1, 64902500), (2, 32451250), (4, 16225625), (5, 12980500), (10, 6490250), (13, 4992500), (20, 3245125), (25, 2596100), (26, 2496250), (50, 1298050), (52, 1248125), (65, 998500), (100, 649025), (125, 519220), (130, 499250), (250, 259610), (260, 249625), (325, 199700), (500, 129805), (625, 103844), (650, 99850), (1250, 51922), (1300, 49925), (1625, 39940), (1997, 32500), (2500, 25961), (3250, 19970), (3994, 16250), (6500, 9985), (7988, 8125)]