21678535

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{1439}}^1$

素因数の和:1598

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 5692985

約数列:

[1, 5, 23, 115, 131, 655, 1439, 3013, 7195, 15065, 33097, 165485, 188509, 942545, 4335707, 21678535]

約数ペア:

[(1, 21678535), (5, 4335707), (23, 942545), (115, 188509), (131, 165485), (655, 33097), (1439, 15065), (3013, 7195)]