80120440

素因数分解:

$2^3\times 5^1\times {\mathrm{2003011}}^1$

素因数の和:2003022

約数の個数: 16

約数和(自身を含む): 180271080

約数和(自身を除く): 100150640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2003011, 4006022, 8012044, 10015055, 16024088, 20030110, 40060220, 80120440]

約数ペア:

[(1, 80120440), (2, 40060220), (4, 20030110), (5, 16024088), (8, 10015055), (10, 8012044), (20, 4006022), (40, 2003011)]