642628

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:459

約数の個数: 24

約数和(自身を含む): 1310400

約数和(自身を除く): 667772

約数列:

[1, 2, 4, 7, 14, 28, 59, 118, 236, 389, 413, 778, 826, 1556, 1652, 2723, 5446, 10892, 22951, 45902, 91804, 160657, 321314, 642628]

約数ペア:

[(1, 642628), (2, 321314), (4, 160657), (7, 91804), (14, 45902), (28, 22951), (59, 10892), (118, 5446), (236, 2723), (389, 1652), (413, 1556), (778, 826)]