18985660

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{17911}}^1$

素因数の和:17973

約数の個数: 24

約数和(自身を含む): 40624416

約数和(自身を除く): 21638756

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 17911, 35822, 71644, 89555, 179110, 358220, 949283, 1898566, 3797132, 4746415, 9492830, 18985660]

約数ペア:

[(1, 18985660), (2, 9492830), (4, 4746415), (5, 3797132), (10, 1898566), (20, 949283), (53, 358220), (106, 179110), (212, 89555), (265, 71644), (530, 35822), (1060, 17911)]