20257629

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7253}}^1$

素因数の和:7289

約数の個数: 24

約数和(自身を含む): 33078240

約数和(自身を除く): 12820611

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7253, 21759, 50771, 137807, 152313, 355397, 413421, 964649, 1066191, 2893947, 6752543, 20257629]

約数ペア:

[(1, 20257629), (3, 6752543), (7, 2893947), (19, 1066191), (21, 964649), (49, 413421), (57, 355397), (133, 152313), (147, 137807), (399, 50771), (931, 21759), (2793, 7253)]