20187013

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{641}}^1$

素因数の和:1068

約数の個数: 16

約数和(自身を含む): 25269120

約数和(自身を除く): 5082107

約数列:

[1, 7, 11, 77, 409, 641, 2863, 4487, 4499, 7051, 31493, 49357, 262169, 1835183, 2883859, 20187013]

約数ペア:

[(1, 20187013), (7, 2883859), (11, 1835183), (77, 262169), (409, 49357), (641, 31493), (2863, 7051), (4487, 4499)]