21489637

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1039}}^1$

素因数の和:1132

約数の個数: 16

約数和(自身を含む): 24344320

約数和(自身を除く): 2854683

約数列:

[1, 13, 37, 43, 481, 559, 1039, 1591, 13507, 20683, 38443, 44677, 499759, 580801, 1653049, 21489637]

約数ペア:

[(1, 21489637), (13, 1653049), (37, 580801), (43, 499759), (481, 44677), (559, 38443), (1039, 20683), (1591, 13507)]