210947891

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{757}}^1$

素因数の和:840

約数の個数: 36

約数和(自身を含む): 275827104

約数和(自身を除く): 64879213

約数列:

[1, 7, 11, 47, 49, 77, 121, 329, 517, 539, 757, 847, 2303, 3619, 5299, 5687, 5929, 8327, 25333, 35579, 37093, 39809, 58289, 91597, 249053, 278663, 391369, 408023, 641179, 1743371, 2739583, 4305059, 4488253, 19177081, 30135413, 210947891]

約数ペア:

[(1, 210947891), (7, 30135413), (11, 19177081), (47, 4488253), (49, 4305059), (77, 2739583), (121, 1743371), (329, 641179), (517, 408023), (539, 391369), (757, 278663), (847, 249053), (2303, 91597), (3619, 58289), (5299, 39809), (5687, 37093), (5929, 35579), (8327, 25333)]