21856887

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2099}}^1$

素因数の和:2207

約数の個数: 24

約数和(自身を含む): 34398000

約数和(自身を除く): 12541113

約数列:

[1, 3, 9, 13, 39, 89, 117, 267, 801, 1157, 2099, 3471, 6297, 10413, 18891, 27287, 81861, 186811, 245583, 560433, 1681299, 2428543, 7285629, 21856887]

約数ペア:

[(1, 21856887), (3, 7285629), (9, 2428543), (13, 1681299), (39, 560433), (89, 245583), (117, 186811), (267, 81861), (801, 27287), (1157, 18891), (2099, 10413), (3471, 6297)]