20642541

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1\times {\mathrm{521}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 28263168

約数和(自身を除く): 7620627

約数列:

[1, 3, 47, 141, 281, 521, 843, 1563, 13207, 24487, 39621, 73461, 146401, 439203, 6880847, 20642541]

約数ペア:

[(1, 20642541), (3, 6880847), (47, 439203), (141, 146401), (281, 73461), (521, 39621), (843, 24487), (1563, 13207)]