21218714

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{20521}}^1$

素因数の和:20581

約数の個数: 16

約数和(自身を含む): 35462016

約数和(自身を除く): 14243302

約数列:

[1, 2, 11, 22, 47, 94, 517, 1034, 20521, 41042, 225731, 451462, 964487, 1928974, 10609357, 21218714]

約数ペア:

[(1, 21218714), (2, 10609357), (11, 1928974), (22, 964487), (47, 451462), (94, 225731), (517, 41042), (1034, 20521)]