19985491

素因数分解:

${\mathrm{41}}^1\times {\mathrm{61}}^2\times {\mathrm{131}}^1$

素因数の和:294

約数の個数: 12

約数和(自身を含む): 20972952

約数和(自身を除く): 987461

約数列:

[1, 41, 61, 131, 2501, 3721, 5371, 7991, 152561, 327631, 487451, 19985491]

約数ペア:

[(1, 19985491), (41, 487451), (61, 327631), (131, 152561), (2501, 7991), (3721, 5371)]