21938420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156703}}^1$

素因数の和:156719

約数の個数: 24

約数和(自身を含む): 52652544

約数和(自身を除く): 30714124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156703, 313406, 626812, 783515, 1096921, 1567030, 2193842, 3134060, 4387684, 5484605, 10969210, 21938420]

約数ペア:

[(1, 21938420), (2, 10969210), (4, 5484605), (5, 4387684), (7, 3134060), (10, 2193842), (14, 1567030), (20, 1096921), (28, 783515), (35, 626812), (70, 313406), (140, 156703)]