80528720

素因数分解:

$2^4\times 5^1\times {\mathrm{1006609}}^1$

素因数の和:1006622

約数の個数: 20

約数和(自身を含む): 187229460

約数和(自身を除く): 106700740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1006609, 2013218, 4026436, 5033045, 8052872, 10066090, 16105744, 20132180, 40264360, 80528720]

約数ペア:

[(1, 80528720), (2, 40264360), (4, 20132180), (5, 16105744), (8, 10066090), (10, 8052872), (16, 5033045), (20, 4026436), (40, 2013218), (80, 1006609)]