21408668

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{6551}}^1$

素因数の和:6617

約数の個数: 24

約数和(自身を含む): 40360320

約数和(自身を除く): 18951652

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 817, 1634, 3268, 6551, 13102, 26204, 124469, 248938, 281693, 497876, 563386, 1126772, 5352167, 10704334, 21408668]

約数ペア:

[(1, 21408668), (2, 10704334), (4, 5352167), (19, 1126772), (38, 563386), (43, 497876), (76, 281693), (86, 248938), (172, 124469), (817, 26204), (1634, 13102), (3268, 6551)]