21657013

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{757}}^1$

素因数の和:892

約数の個数: 16

約数和(自身を含む): 25565824

約数和(自身を除く): 3908811

約数列:

[1, 7, 61, 67, 427, 469, 757, 4087, 5299, 28609, 46177, 50719, 323239, 355033, 3093859, 21657013]

約数ペア:

[(1, 21657013), (7, 3093859), (61, 355033), (67, 323239), (427, 50719), (469, 46177), (757, 28609), (4087, 5299)]