80168720

素因数分解:

$2^4\times 5^1\times {\mathrm{1002109}}^1$

素因数の和:1002122

約数の個数: 20

約数和(自身を含む): 186392460

約数和(自身を除く): 106223740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1002109, 2004218, 4008436, 5010545, 8016872, 10021090, 16033744, 20042180, 40084360, 80168720]

約数ペア:

[(1, 80168720), (2, 40084360), (4, 20042180), (5, 16033744), (8, 10021090), (10, 8016872), (16, 5010545), (20, 4008436), (40, 2004218), (80, 1002109)]