80120360

素因数分解:

$2^3\times 5^1\times {\mathrm{2003009}}^1$

素因数の和:2003020

約数の個数: 16

約数和(自身を含む): 180270900

約数和(自身を除く): 100150540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2003009, 4006018, 8012036, 10015045, 16024072, 20030090, 40060180, 80120360]

約数ペア:

[(1, 80120360), (2, 40060180), (4, 20030090), (5, 16024072), (8, 10015045), (10, 8012036), (20, 4006018), (40, 2003009)]