81345965

素因数分解:

$5^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1\times {\mathrm{661}}^1$

素因数の和:980

約数の個数: 16

約数和(自身を含む): 99014016

約数和(自身を除く): 17668051

約数列:

[1, 5, 151, 163, 661, 755, 815, 3305, 24613, 99811, 107743, 123065, 499055, 538715, 16269193, 81345965]

約数ペア:

[(1, 81345965), (5, 16269193), (151, 538715), (163, 499055), (661, 123065), (755, 107743), (815, 99811), (3305, 24613)]