19904260

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2267}}^1$

素因数の和:2715

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 22008380

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 2267, 4390, 4534, 8780, 9068, 11335, 22670, 45340, 995213, 1990426, 3980852, 4976065, 9952130, 19904260]

約数ペア:

[(1, 19904260), (2, 9952130), (4, 4976065), (5, 3980852), (10, 1990426), (20, 995213), (439, 45340), (878, 22670), (1756, 11335), (2195, 9068), (2267, 8780), (4390, 4534)]