20817740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33577}}^1$

素因数の和:33617

約数の個数: 24

約数和(自身を含む): 45128832

約数和(自身を除く): 24311092

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33577, 67154, 134308, 167885, 335770, 671540, 1040887, 2081774, 4163548, 5204435, 10408870, 20817740]

約数ペア:

[(1, 20817740), (2, 10408870), (4, 5204435), (5, 4163548), (10, 2081774), (20, 1040887), (31, 671540), (62, 335770), (124, 167885), (155, 134308), (310, 67154), (620, 33577)]