21957740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156841}}^1$

素因数の和:156857

約数の個数: 24

約数和(自身を含む): 52698912

約数和(自身を除く): 30741172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156841, 313682, 627364, 784205, 1097887, 1568410, 2195774, 3136820, 4391548, 5489435, 10978870, 21957740]

約数ペア:

[(1, 21957740), (2, 10978870), (4, 5489435), (5, 4391548), (7, 3136820), (10, 2195774), (14, 1568410), (20, 1097887), (28, 784205), (35, 627364), (70, 313682), (140, 156841)]