80705740

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{9109}}^1$

素因数の和:9561

約数の個数: 24

約数和(自身を含む): 169883280

約数和(自身を除く): 89177540

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 4430, 8860, 9109, 18218, 36436, 45545, 91090, 182180, 4035287, 8070574, 16141148, 20176435, 40352870, 80705740]

約数ペア:

[(1, 80705740), (2, 40352870), (4, 20176435), (5, 16141148), (10, 8070574), (20, 4035287), (443, 182180), (886, 91090), (1772, 45545), (2215, 36436), (4430, 18218), (8860, 9109)]