21557896

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{86927}}^1$

素因数の和:86964

約数の個数: 16

約数和(自身を含む): 41725440

約数和(自身を除く): 20167544

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 86927, 173854, 347708, 695416, 2694737, 5389474, 10778948, 21557896]

約数ペア:

[(1, 21557896), (2, 10778948), (4, 5389474), (8, 2694737), (31, 695416), (62, 347708), (124, 173854), (248, 86927)]