20721864

素因数分解:

$2^3\times 3^1\times {\mathrm{163}}^1\times {\mathrm{5297}}^1$

素因数の和:5469

約数の個数: 32

約数和(自身を含む): 52132320

約数和(自身を除く): 31410456

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 163, 326, 489, 652, 978, 1304, 1956, 3912, 5297, 10594, 15891, 21188, 31782, 42376, 63564, 127128, 863411, 1726822, 2590233, 3453644, 5180466, 6907288, 10360932, 20721864]

約数ペア:

[(1, 20721864), (2, 10360932), (3, 6907288), (4, 5180466), (6, 3453644), (8, 2590233), (12, 1726822), (24, 863411), (163, 127128), (326, 63564), (489, 42376), (652, 31782), (978, 21188), (1304, 15891), (1956, 10594), (3912, 5297)]