20700640

素因数分解:

$2^5\times 5^1\times {\mathrm{129379}}^1$

素因数の和:129394

約数の個数: 24

約数和(自身を含む): 48905640

約数和(自身を除く): 28205000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 129379, 258758, 517516, 646895, 1035032, 1293790, 2070064, 2587580, 4140128, 5175160, 10350320, 20700640]

約数ペア:

[(1, 20700640), (2, 10350320), (4, 5175160), (5, 4140128), (8, 2587580), (10, 2070064), (16, 1293790), (20, 1035032), (32, 646895), (40, 517516), (80, 258758), (160, 129379)]