8008720

素因数分解:

$2^4\times 5^1\times {\mathrm{100109}}^1$

素因数の和:100122

約数の個数: 20

約数和(自身を含む): 18620460

約数和(自身を除く): 10611740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 100109, 200218, 400436, 500545, 800872, 1001090, 1601744, 2002180, 4004360, 8008720]

約数ペア:

[(1, 8008720), (2, 4004360), (4, 2002180), (5, 1601744), (8, 1001090), (10, 800872), (16, 500545), (20, 400436), (40, 200218), (80, 100109)]