20987242

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1\times {\mathrm{1553}}^1$

素因数の和:1817

約数の個数: 16

約数和(自身を含む): 32727240

約数和(自身を除く): 11739998

約数列:

[1, 2, 29, 58, 233, 466, 1553, 3106, 6757, 13514, 45037, 90074, 361849, 723698, 10493621, 20987242]

約数ペア:

[(1, 20987242), (2, 10493621), (29, 723698), (58, 361849), (233, 90074), (466, 45037), (1553, 13514), (3106, 6757)]