10721420

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{811}}^1$

素因数の和:1481

約数の個数: 24

約数和(自身を含む): 22576848

約数和(自身を除く): 11855428

約数列:

[1, 2, 4, 5, 10, 20, 661, 811, 1322, 1622, 2644, 3244, 3305, 4055, 6610, 8110, 13220, 16220, 536071, 1072142, 2144284, 2680355, 5360710, 10721420]

約数ペア:

[(1, 10721420), (2, 5360710), (4, 2680355), (5, 2144284), (10, 1072142), (20, 536071), (661, 16220), (811, 13220), (1322, 8110), (1622, 6610), (2644, 4055), (3244, 3305)]