64815475

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{8971}}^1$

素因数の和:9015

約数の個数: 18

約数和(自身を含む): 85386524

約数和(自身を除く): 20571049

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 8971, 44855, 152507, 224275, 762535, 2592619, 3812675, 12963095, 64815475]

約数ペア:

[(1, 64815475), (5, 12963095), (17, 3812675), (25, 2592619), (85, 762535), (289, 224275), (425, 152507), (1445, 44855), (7225, 8971)]