90178160

素因数分解:

$2^4\times 5^1\times {\mathrm{1127227}}^1$

素因数の和:1127240

約数の個数: 20

約数和(自身を含む): 209664408

約数和(自身を除く): 119486248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1127227, 2254454, 4508908, 5636135, 9017816, 11272270, 18035632, 22544540, 45089080, 90178160]

約数ペア:

[(1, 90178160), (2, 45089080), (4, 22544540), (5, 18035632), (8, 11272270), (10, 9017816), (16, 5636135), (20, 4508908), (40, 2254454), (80, 1127227)]