8425625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:111

約数の個数: 40

約数和(自身を含む): 12202344

約数和(自身を除く): 3776719

約数列:

[1, 5, 13, 17, 25, 61, 65, 85, 125, 221, 305, 325, 425, 625, 793, 1037, 1105, 1525, 1625, 2125, 3965, 5185, 5525, 7625, 8125, 10625, 13481, 19825, 25925, 27625, 38125, 67405, 99125, 129625, 138125, 337025, 495625, 648125, 1685125, 8425625]

約数ペア:

[(1, 8425625), (5, 1685125), (13, 648125), (17, 495625), (25, 337025), (61, 138125), (65, 129625), (85, 99125), (125, 67405), (221, 38125), (305, 27625), (325, 25925), (425, 19825), (625, 13481), (793, 10625), (1037, 8125), (1105, 7625), (1525, 5525), (1625, 5185), (2125, 3965)]