20880188

素因数分解:

$2^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{2971}}^1$

素因数の和:3233

約数の個数: 24

約数和(自身を含む): 41940864

約数和(自身を除く): 21060676

約数列:

[1, 2, 4, 7, 14, 28, 251, 502, 1004, 1757, 2971, 3514, 5942, 7028, 11884, 20797, 41594, 83188, 745721, 1491442, 2982884, 5220047, 10440094, 20880188]

約数ペア:

[(1, 20880188), (2, 10440094), (4, 5220047), (7, 2982884), (14, 1491442), (28, 745721), (251, 83188), (502, 41594), (1004, 20797), (1757, 11884), (2971, 7028), (3514, 5942)]