18907825

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{2617}}^1$

素因数の和:2661

約数の個数: 18

約数和(自身を含む): 24915506

約数和(自身を除く): 6007681

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 2617, 7225, 13085, 44489, 65425, 222445, 756313, 1112225, 3781565, 18907825]

約数ペア:

[(1, 18907825), (5, 3781565), (17, 1112225), (25, 756313), (85, 222445), (289, 65425), (425, 44489), (1445, 13085), (2617, 7225)]