20396397

素因数分解:

$3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1665

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 11614803

約数列:

[1, 3, 7, 21, 49, 89, 147, 267, 623, 1559, 1869, 4361, 4677, 10913, 13083, 32739, 76391, 138751, 229173, 416253, 971257, 2913771, 6798799, 20396397]

約数ペア:

[(1, 20396397), (3, 6798799), (7, 2913771), (21, 971257), (49, 416253), (89, 229173), (147, 138751), (267, 76391), (623, 32739), (1559, 13083), (1869, 10913), (4361, 4677)]