21391239

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{709}}^1$

素因数の和:914

約数の個数: 16

約数和(自身を含む): 29138400

約数和(自身を除く): 7747161

約数列:

[1, 3, 89, 113, 267, 339, 709, 2127, 10057, 30171, 63101, 80117, 189303, 240351, 7130413, 21391239]

約数ペア:

[(1, 21391239), (3, 7130413), (89, 240351), (113, 189303), (267, 80117), (339, 63101), (709, 30171), (2127, 10057)]