80956180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{45481}}^1$

素因数の和:45579

約数の個数: 24

約数和(自身を含む): 171921960

約数和(自身を除く): 90965780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 45481, 90962, 181924, 227405, 454810, 909620, 4047809, 8095618, 16191236, 20239045, 40478090, 80956180]

約数ペア:

[(1, 80956180), (2, 40478090), (4, 20239045), (5, 16191236), (10, 8095618), (20, 4047809), (89, 909620), (178, 454810), (356, 227405), (445, 181924), (890, 90962), (1780, 45481)]