21047290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191339}}^1$

素因数の和:191357

約数の個数: 16

約数和(自身を含む): 41329440

約数和(自身を除く): 20282150

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191339, 382678, 956695, 1913390, 2104729, 4209458, 10523645, 21047290]

約数ペア:

[(1, 21047290), (2, 10523645), (5, 4209458), (10, 2104729), (11, 1913390), (22, 956695), (55, 382678), (110, 191339)]