21141939

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1801}}^1$

素因数の和:1867

約数の個数: 32

約数和(自身を含む): 35521024

約数和(自身を除く): 14379085

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 1801, 3913, 5403, 11739, 12607, 23413, 37821, 70239, 77443, 163891, 232329, 491673, 542101, 1006759, 1626303, 3020277, 7047313, 21141939]

約数ペア:

[(1, 21141939), (3, 7047313), (7, 3020277), (13, 1626303), (21, 1006759), (39, 542101), (43, 491673), (91, 232329), (129, 163891), (273, 77443), (301, 70239), (559, 37821), (903, 23413), (1677, 12607), (1801, 11739), (3913, 5403)]