3986390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20981}}^1$

素因数の和:21007

約数の個数: 16

約数和(自身を含む): 7553520

約数和(自身を除く): 3567130

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 20981, 41962, 104905, 209810, 398639, 797278, 1993195, 3986390]

約数ペア:

[(1, 3986390), (2, 1993195), (5, 797278), (10, 398639), (19, 209810), (38, 104905), (95, 41962), (190, 20981)]