17640021

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{11831}}^1$

素因数の和:11912

約数の個数: 16

約数和(自身を含む): 27260928

約数和(自身を除く): 9620907

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 11831, 35493, 82817, 248451, 840001, 2520003, 5880007, 17640021]

約数ペア:

[(1, 17640021), (3, 5880007), (7, 2520003), (21, 840001), (71, 248451), (213, 82817), (497, 35493), (1491, 11831)]