21140242

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{1997}}^1$

素因数の和:2145

約数の個数: 16

約数和(自身を含む): 32607360

約数和(自身を除く): 11467118

約数列:

[1, 2, 67, 79, 134, 158, 1997, 3994, 5293, 10586, 133799, 157763, 267598, 315526, 10570121, 21140242]

約数ペア:

[(1, 21140242), (2, 10570121), (67, 315526), (79, 267598), (134, 157763), (158, 133799), (1997, 10586), (3994, 5293)]