21771080

素因数分解:

$2^3\times 5^1\times {\mathrm{544277}}^1$

素因数の和:544288

約数の個数: 16

約数和(自身を含む): 48985020

約数和(自身を除く): 27213940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 544277, 1088554, 2177108, 2721385, 4354216, 5442770, 10885540, 21771080]

約数ペア:

[(1, 21771080), (2, 10885540), (4, 5442770), (5, 4354216), (8, 2721385), (10, 2177108), (20, 1088554), (40, 544277)]