21358436

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44129}}^1$

素因数の和:44155

約数の個数: 18

約数和(自身を含む): 41085030

約数和(自身を除く): 19726594

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44129, 88258, 176516, 485419, 970838, 1941676, 5339609, 10679218, 21358436]

約数ペア:

[(1, 21358436), (2, 10679218), (4, 5339609), (11, 1941676), (22, 970838), (44, 485419), (121, 176516), (242, 88258), (484, 44129)]