20721022

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{317}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 39152160

約数和(自身を除く): 18431138

約数列:

[1, 2, 7, 14, 23, 29, 46, 49, 58, 98, 161, 203, 317, 322, 406, 634, 667, 1127, 1334, 1421, 2219, 2254, 2842, 4438, 4669, 7291, 9193, 9338, 14582, 15533, 18386, 31066, 32683, 51037, 64351, 65366, 102074, 128702, 211439, 357259, 422878, 450457, 714518, 900914, 1480073, 2960146, 10360511, 20721022]

約数ペア:

[(1, 20721022), (2, 10360511), (7, 2960146), (14, 1480073), (23, 900914), (29, 714518), (46, 450457), (49, 422878), (58, 357259), (98, 211439), (161, 128702), (203, 102074), (317, 65366), (322, 64351), (406, 51037), (634, 32683), (667, 31066), (1127, 18386), (1334, 15533), (1421, 14582), (2219, 9338), (2254, 9193), (2842, 7291), (4438, 4669)]