12788721

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1279}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 20367360

約数和(自身を除く): 7578639

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 1279, 3333, 3837, 9999, 11511, 14069, 42207, 126621, 129179, 387537, 1162611, 1420969, 4262907, 12788721]

約数ペア:

[(1, 12788721), (3, 4262907), (9, 1420969), (11, 1162611), (33, 387537), (99, 129179), (101, 126621), (303, 42207), (909, 14069), (1111, 11511), (1279, 9999), (3333, 3837)]