21258017

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2749}}^1$

素因数の和:2816

約数の個数: 16

約数和(自身を含む): 25080000

約数和(自身を除く): 3821983

約数列:

[1, 11, 19, 37, 209, 407, 703, 2749, 7733, 30239, 52231, 101713, 574541, 1118843, 1932547, 21258017]

約数ペア:

[(1, 21258017), (11, 1932547), (19, 1118843), (37, 574541), (209, 101713), (407, 52231), (703, 30239), (2749, 7733)]