17920371

素因数分解:

$3^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1291}}^1$

素因数の和:1962

約数の個数: 16

約数和(自身を含む): 27369728

約数和(自身を除く): 9449357

約数列:

[1, 3, 7, 21, 661, 1291, 1983, 3873, 4627, 9037, 13881, 27111, 853351, 2560053, 5973457, 17920371]

約数ペア:

[(1, 17920371), (3, 5973457), (7, 2560053), (21, 853351), (661, 27111), (1291, 13881), (1983, 9037), (3873, 4627)]