21091156

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{2609}}^1$

素因数の和:2703

約数の個数: 24

約数和(自身を含む): 38586240

約数和(自身を除く): 17495084

約数列:

[1, 2, 4, 43, 47, 86, 94, 172, 188, 2021, 2609, 4042, 5218, 8084, 10436, 112187, 122623, 224374, 245246, 448748, 490492, 5272789, 10545578, 21091156]

約数ペア:

[(1, 21091156), (2, 10545578), (4, 5272789), (43, 490492), (47, 448748), (86, 245246), (94, 224374), (172, 122623), (188, 112187), (2021, 10436), (2609, 8084), (4042, 5218)]