28457740

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{2179}}^1$

素因数の和:2841

約数の個数: 24

約数和(自身を含む): 59880240

約数和(自身を除く): 31422500

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 2179, 2612, 3265, 4358, 6530, 8716, 10895, 13060, 21790, 43580, 1422887, 2845774, 5691548, 7114435, 14228870, 28457740]

約数ペア:

[(1, 28457740), (2, 14228870), (4, 7114435), (5, 5691548), (10, 2845774), (20, 1422887), (653, 43580), (1306, 21790), (2179, 13060), (2612, 10895), (3265, 8716), (4358, 6530)]