21269661

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{7393}}^1$

素因数の和:7540

約数の個数: 16

約数和(自身を含む): 32651904

約数和(自身を除く): 11382243

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 7393, 22179, 51751, 155253, 1012841, 3038523, 7089887, 21269661]

約数ペア:

[(1, 21269661), (3, 7089887), (7, 3038523), (21, 1012841), (137, 155253), (411, 51751), (959, 22179), (2877, 7393)]