87971620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{399871}}^1$

素因数の和:399891

約数の個数: 24

約数和(自身を含む): 201535488

約数和(自身を除く): 113563868

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 399871, 799742, 1599484, 1999355, 3998710, 4398581, 7997420, 8797162, 17594324, 21992905, 43985810, 87971620]

約数ペア:

[(1, 87971620), (2, 43985810), (4, 21992905), (5, 17594324), (10, 8797162), (11, 7997420), (20, 4398581), (22, 3998710), (44, 1999355), (55, 1599484), (110, 799742), (220, 399871)]