21158180

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9887}}^1$

素因数の和:10003

約数の個数: 24

約数和(自身を含む): 44851968

約数和(自身を除く): 23693788

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9887, 19774, 39548, 49435, 98870, 197740, 1057909, 2115818, 4231636, 5289545, 10579090, 21158180]

約数ペア:

[(1, 21158180), (2, 10579090), (4, 5289545), (5, 4231636), (10, 2115818), (20, 1057909), (107, 197740), (214, 98870), (428, 49435), (535, 39548), (1070, 19774), (2140, 9887)]