21795580

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15349}}^1$

素因数の和:15429

約数の個数: 24

約数和(自身を含む): 46418400

約数和(自身を除く): 24622820

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 15349, 30698, 61396, 76745, 153490, 306980, 1089779, 2179558, 4359116, 5448895, 10897790, 21795580]

約数ペア:

[(1, 21795580), (2, 10897790), (4, 5448895), (5, 4359116), (10, 2179558), (20, 1089779), (71, 306980), (142, 153490), (284, 76745), (355, 61396), (710, 30698), (1420, 15349)]