28521717

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71483}}^1$

素因数の和:71512

約数の個数: 16

約数和(自身を含む): 45749760

約数和(自身を除く): 17228043

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 71483, 214449, 500381, 1358177, 1501143, 4074531, 9507239, 28521717]

約数ペア:

[(1, 28521717), (3, 9507239), (7, 4074531), (19, 1501143), (21, 1358177), (57, 500381), (133, 214449), (399, 71483)]