16681580

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1031}}^1$

素因数の和:1849

約数の個数: 24

約数和(自身を含む): 35108640

約数和(自身を除く): 18427060

約数列:

[1, 2, 4, 5, 10, 20, 809, 1031, 1618, 2062, 3236, 4045, 4124, 5155, 8090, 10310, 16180, 20620, 834079, 1668158, 3336316, 4170395, 8340790, 16681580]

約数ペア:

[(1, 16681580), (2, 8340790), (4, 4170395), (5, 3336316), (10, 1668158), (20, 834079), (809, 20620), (1031, 16180), (1618, 10310), (2062, 8090), (3236, 5155), (4045, 4124)]