21002787

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1129}}^1$

素因数の和:1204

約数の個数: 32

約数和(自身を含む): 34171200

約数和(自身を除く): 13168413

約数列:

[1, 3, 9, 13, 27, 39, 53, 117, 159, 351, 477, 689, 1129, 1431, 2067, 3387, 6201, 10161, 14677, 18603, 30483, 44031, 59837, 132093, 179511, 396279, 538533, 777881, 1615599, 2333643, 7000929, 21002787]

約数ペア:

[(1, 21002787), (3, 7000929), (9, 2333643), (13, 1615599), (27, 777881), (39, 538533), (53, 396279), (117, 179511), (159, 132093), (351, 59837), (477, 44031), (689, 30483), (1129, 18603), (1431, 14677), (2067, 10161), (3387, 6201)]