19208720

素因数分解:

$2^4\times 5^1\times {\mathrm{240109}}^1$

素因数の和:240122

約数の個数: 20

約数和(自身を含む): 44660460

約数和(自身を除く): 25451740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 240109, 480218, 960436, 1200545, 1920872, 2401090, 3841744, 4802180, 9604360, 19208720]

約数ペア:

[(1, 19208720), (2, 9604360), (4, 4802180), (5, 3841744), (8, 2401090), (10, 1920872), (16, 1200545), (20, 960436), (40, 480218), (80, 240109)]