64455625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{7933}}^1$

素因数の和:7966

約数の個数: 20

約数和(自身を含む): 86750356

約数和(自身を除く): 22294731

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 7933, 8125, 39665, 103129, 198325, 515645, 991625, 2578225, 4958125, 12891125, 64455625]

約数ペア:

[(1, 64455625), (5, 12891125), (13, 4958125), (25, 2578225), (65, 991625), (125, 515645), (325, 198325), (625, 103129), (1625, 39665), (7933, 8125)]