21288051

素因数分解:

$3^2\times {\mathrm{79}}^2\times {\mathrm{379}}^1$

素因数の和:543

約数の個数: 18

約数和(自身を含む): 31225740

約数和(自身を除く): 9937689

約数列:

[1, 3, 9, 79, 237, 379, 711, 1137, 3411, 6241, 18723, 29941, 56169, 89823, 269469, 2365339, 7096017, 21288051]

約数ペア:

[(1, 21288051), (3, 7096017), (9, 2365339), (79, 269469), (237, 89823), (379, 56169), (711, 29941), (1137, 18723), (3411, 6241)]