21178911

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{1129}}^1$

素因数の和:1195

約数の個数: 24

約数和(自身を含む): 31432080

約数和(自身を除く): 10253169

約数列:

[1, 3, 13, 37, 39, 111, 169, 481, 507, 1129, 1443, 3387, 6253, 14677, 18759, 41773, 44031, 125319, 190801, 543049, 572403, 1629147, 7059637, 21178911]

約数ペア:

[(1, 21178911), (3, 7059637), (13, 1629147), (37, 572403), (39, 543049), (111, 190801), (169, 125319), (481, 44031), (507, 41773), (1129, 18759), (1443, 14677), (3387, 6253)]