21082287

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{1979}}^1$

素因数の和:2102

約数の個数: 16

約数和(自身を含む): 29082240

約数和(自身を除く): 7999953

約数列:

[1, 3, 53, 67, 159, 201, 1979, 3551, 5937, 10653, 104887, 132593, 314661, 397779, 7027429, 21082287]

約数ペア:

[(1, 21082287), (3, 7027429), (53, 397779), (67, 314661), (159, 132593), (201, 104887), (1979, 10653), (3551, 5937)]