21271389

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{2069}}^1$

素因数の和:2244

約数の個数: 16

約数和(自身を含む): 29808000

約数和(自身を除く): 8536611

約数列:

[1, 3, 23, 69, 149, 447, 2069, 3427, 6207, 10281, 47587, 142761, 308281, 924843, 7090463, 21271389]

約数ペア:

[(1, 21271389), (3, 7090463), (23, 924843), (69, 308281), (149, 142761), (447, 47587), (2069, 10281), (3427, 6207)]