21130172

素因数分解:

$2^2\times 7^3\times {\mathrm{15401}}^1$

素因数の和:15426

約数の個数: 24

約数和(自身を含む): 43125600

約数和(自身を除く): 21995428

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 15401, 30802, 61604, 107807, 215614, 431228, 754649, 1509298, 3018596, 5282543, 10565086, 21130172]

約数ペア:

[(1, 21130172), (2, 10565086), (4, 5282543), (7, 3018596), (14, 1509298), (28, 754649), (49, 431228), (98, 215614), (196, 107807), (343, 61604), (686, 30802), (1372, 15401)]