180040360

素因数分解:

$2^3\times 5^1\times {\mathrm{4501009}}^1$

素因数の和:4501020

約数の個数: 16

約数和(自身を含む): 405090900

約数和(自身を除く): 225050540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4501009, 9002018, 18004036, 22505045, 36008072, 45010090, 90020180, 180040360]

約数ペア:

[(1, 180040360), (2, 90020180), (4, 45010090), (5, 36008072), (8, 22505045), (10, 18004036), (20, 9002018), (40, 4501009)]