21801615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1861}}^1$

素因数の和:1951

約数の個数: 32

約数和(自身を含む): 38610432

約数和(自身を除く): 16808817

約数列:

[1, 3, 5, 11, 15, 33, 55, 71, 165, 213, 355, 781, 1065, 1861, 2343, 3905, 5583, 9305, 11715, 20471, 27915, 61413, 102355, 132131, 307065, 396393, 660655, 1453441, 1981965, 4360323, 7267205, 21801615]

約数ペア:

[(1, 21801615), (3, 7267205), (5, 4360323), (11, 1981965), (15, 1453441), (33, 660655), (55, 396393), (71, 307065), (165, 132131), (213, 102355), (355, 61413), (781, 27915), (1065, 20471), (1861, 11715), (2343, 9305), (3905, 5583)]