72418160

素因数分解:

$2^4\times 5^1\times {\mathrm{905227}}^1$

素因数の和:905240

約数の個数: 20

約数和(自身を含む): 168372408

約数和(自身を除く): 95954248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 905227, 1810454, 3620908, 4526135, 7241816, 9052270, 14483632, 18104540, 36209080, 72418160]

約数ペア:

[(1, 72418160), (2, 36209080), (4, 18104540), (5, 14483632), (8, 9052270), (10, 7241816), (16, 4526135), (20, 3620908), (40, 1810454), (80, 905227)]