21080306

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1289}}^1$

素因数の和:1358

約数の個数: 32

約数和(自身を含む): 37059120

約数和(自身を除く): 15978814

約数列:

[1, 2, 13, 17, 26, 34, 37, 74, 221, 442, 481, 629, 962, 1258, 1289, 2578, 8177, 16354, 16757, 21913, 33514, 43826, 47693, 95386, 284869, 569738, 620009, 810781, 1240018, 1621562, 10540153, 21080306]

約数ペア:

[(1, 21080306), (2, 10540153), (13, 1621562), (17, 1240018), (26, 810781), (34, 620009), (37, 569738), (74, 284869), (221, 95386), (442, 47693), (481, 43826), (629, 33514), (962, 21913), (1258, 16757), (1289, 16354), (2578, 8177)]