21207508

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{5449}}^1$

素因数の和:5599

約数の個数: 24

約数和(自身を含む): 42728000

約数和(自身を除く): 21520492

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 5449, 10898, 21796, 38143, 76286, 152572, 757411, 1514822, 3029644, 5301877, 10603754, 21207508]

約数ペア:

[(1, 21207508), (2, 10603754), (4, 5301877), (7, 3029644), (14, 1514822), (28, 757411), (139, 152572), (278, 76286), (556, 38143), (973, 21796), (1946, 10898), (3892, 5449)]