12520557

素因数分解:

$3^2\times 7^1\times {\mathrm{353}}^1\times {\mathrm{563}}^1$

素因数の和:929

約数の個数: 24

約数和(自身を含む): 20764224

約数和(自身を除く): 8243667

約数列:

[1, 3, 7, 9, 21, 63, 353, 563, 1059, 1689, 2471, 3177, 3941, 5067, 7413, 11823, 22239, 35469, 198739, 596217, 1391173, 1788651, 4173519, 12520557]

約数ペア:

[(1, 12520557), (3, 4173519), (7, 1788651), (9, 1391173), (21, 596217), (63, 198739), (353, 35469), (563, 22239), (1059, 11823), (1689, 7413), (2471, 5067), (3177, 3941)]