21971620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99871}}^1$

素因数の和:99891

約数の個数: 24

約数和(自身を含む): 50335488

約数和(自身を除く): 28363868

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99871, 199742, 399484, 499355, 998710, 1098581, 1997420, 2197162, 4394324, 5492905, 10985810, 21971620]

約数ペア:

[(1, 21971620), (2, 10985810), (4, 5492905), (5, 4394324), (10, 2197162), (11, 1997420), (20, 1098581), (22, 998710), (44, 499355), (55, 399484), (110, 199742), (220, 99871)]