21227499

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 31401552

約数和(自身を除く): 10174053

約数列:

[1, 3, 9, 83, 157, 181, 249, 471, 543, 747, 1413, 1629, 13031, 15023, 28417, 39093, 45069, 85251, 117279, 135207, 255753, 2358611, 7075833, 21227499]

約数ペア:

[(1, 21227499), (3, 7075833), (9, 2358611), (83, 255753), (157, 135207), (181, 117279), (249, 85251), (471, 45069), (543, 39093), (747, 28417), (1413, 15023), (1629, 13031)]