21237982

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{787}}^1$

素因数の和:1023

約数の個数: 16

約数和(自身を含む): 32452992

約数和(自身を除く): 11215010

約数列:

[1, 2, 103, 131, 206, 262, 787, 1574, 13493, 26986, 81061, 103097, 162122, 206194, 10618991, 21237982]

約数ペア:

[(1, 21237982), (2, 10618991), (103, 206194), (131, 162122), (206, 103097), (262, 81061), (787, 26986), (1574, 13493)]