17990125

素因数分解:

$5^3\times {\mathrm{43}}^1\times {\mathrm{3347}}^1$

素因数の和:3405

約数の個数: 16

約数和(自身を含む): 22980672

約数和(自身を除く): 4990547

約数列:

[1, 5, 25, 43, 125, 215, 1075, 3347, 5375, 16735, 83675, 143921, 418375, 719605, 3598025, 17990125]

約数ペア:

[(1, 17990125), (5, 3598025), (25, 719605), (43, 418375), (125, 143921), (215, 83675), (1075, 16735), (3347, 5375)]