21120999

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1\times {\mathrm{241}}^1$

素因数の和:598

約数の個数: 16

約数和(自身を含む): 28621824

約数和(自身を除く): 7500825

約数列:

[1, 3, 131, 223, 241, 393, 669, 723, 29213, 31571, 53743, 87639, 94713, 161229, 7040333, 21120999]

約数ペア:

[(1, 21120999), (3, 7040333), (131, 161229), (223, 94713), (241, 87639), (393, 53743), (669, 31571), (723, 29213)]