81681470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{628319}}^1$

素因数の和:628339

約数の個数: 16

約数和(自身を含む): 158336640

約数和(自身を除く): 76655170

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 628319, 1256638, 3141595, 6283190, 8168147, 16336294, 40840735, 81681470]

約数ペア:

[(1, 81681470), (2, 40840735), (5, 16336294), (10, 8168147), (13, 6283190), (26, 3141595), (65, 1256638), (130, 628319)]