20388820

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{3257}}^1$

素因数の和:3579

約数の個数: 24

約数和(自身を含む): 42966504

約数和(自身を除く): 22577684

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 3130, 3257, 6260, 6514, 13028, 16285, 32570, 65140, 1019441, 2038882, 4077764, 5097205, 10194410, 20388820]

約数ペア:

[(1, 20388820), (2, 10194410), (4, 5097205), (5, 4077764), (10, 2038882), (20, 1019441), (313, 65140), (626, 32570), (1252, 16285), (1565, 13028), (3130, 6514), (3257, 6260)]