81937885

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{2647}}^1$

素因数の和:2844

約数の個数: 16

約数和(自身を含む): 101428992

約数和(自身を除く): 19491107

約数列:

[1, 5, 41, 151, 205, 755, 2647, 6191, 13235, 30955, 108527, 399697, 542635, 1998485, 16387577, 81937885]

約数ペア:

[(1, 81937885), (5, 16387577), (41, 1998485), (151, 542635), (205, 399697), (755, 108527), (2647, 30955), (6191, 13235)]