20165720

素因数分解:

$2^3\times 5^1\times {\mathrm{504143}}^1$

素因数の和:504154

約数の個数: 16

約数和(自身を含む): 45372960

約数和(自身を除く): 25207240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504143, 1008286, 2016572, 2520715, 4033144, 5041430, 10082860, 20165720]

約数ペア:

[(1, 20165720), (2, 10082860), (4, 5041430), (5, 4033144), (8, 2520715), (10, 2016572), (20, 1008286), (40, 504143)]