15964249

素因数分解:

$7^4\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:198

約数の個数: 20

約数和(自身を含む): 19102820

約数和(自身を除く): 3138571

約数列:

[1, 7, 49, 61, 109, 343, 427, 763, 2401, 2989, 5341, 6649, 20923, 37387, 46543, 146461, 261709, 325801, 2280607, 15964249]

約数ペア:

[(1, 15964249), (7, 2280607), (49, 325801), (61, 261709), (109, 146461), (343, 46543), (427, 37387), (763, 20923), (2401, 6649), (2989, 5341)]