21971740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156941}}^1$

素因数の和:156957

約数の個数: 24

約数和(自身を含む): 52732512

約数和(自身を除く): 30760772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156941, 313882, 627764, 784705, 1098587, 1569410, 2197174, 3138820, 4394348, 5492935, 10985870, 21971740]

約数ペア:

[(1, 21971740), (2, 10985870), (4, 5492935), (5, 4394348), (7, 3138820), (10, 2197174), (14, 1569410), (20, 1098587), (28, 784705), (35, 627764), (70, 313882), (140, 156941)]