21805684

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{1409}}^1$

素因数の和:1539

約数の個数: 24

約数和(自身を含む): 39440520

約数和(自身を除く): 17634836

約数列:

[1, 2, 4, 53, 73, 106, 146, 212, 292, 1409, 2818, 3869, 5636, 7738, 15476, 74677, 102857, 149354, 205714, 298708, 411428, 5451421, 10902842, 21805684]

約数ペア:

[(1, 21805684), (2, 10902842), (4, 5451421), (53, 411428), (73, 298708), (106, 205714), (146, 149354), (212, 102857), (292, 74677), (1409, 15476), (2818, 7738), (3869, 5636)]