157280720

素因数分解:

$2^4\times 5^1\times {\mathrm{1966009}}^1$

素因数の和:1966022

約数の個数: 20

約数和(自身を含む): 365677860

約数和(自身を除く): 208397140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1966009, 3932018, 7864036, 9830045, 15728072, 19660090, 31456144, 39320180, 78640360, 157280720]

約数ペア:

[(1, 157280720), (2, 78640360), (4, 39320180), (5, 31456144), (8, 19660090), (10, 15728072), (16, 9830045), (20, 7864036), (40, 3932018), (80, 1966009)]