81356140

素因数分解:

$2^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{10733}}^1$

素因数の和:11121

約数の個数: 24

約数和(自身を含む): 171314640

約数和(自身を除く): 89958500

約数列:

[1, 2, 4, 5, 10, 20, 379, 758, 1516, 1895, 3790, 7580, 10733, 21466, 42932, 53665, 107330, 214660, 4067807, 8135614, 16271228, 20339035, 40678070, 81356140]

約数ペア:

[(1, 81356140), (2, 40678070), (4, 20339035), (5, 16271228), (10, 8135614), (20, 4067807), (379, 214660), (758, 107330), (1516, 53665), (1895, 42932), (3790, 21466), (7580, 10733)]