80788280

素因数分解:

$2^3\times 5^1\times {\mathrm{2019707}}^1$

素因数の和:2019718

約数の個数: 16

約数和(自身を含む): 181773720

約数和(自身を除く): 100985440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2019707, 4039414, 8078828, 10098535, 16157656, 20197070, 40394140, 80788280]

約数ペア:

[(1, 80788280), (2, 40394140), (4, 20197070), (5, 16157656), (8, 10098535), (10, 8078828), (20, 4039414), (40, 2019707)]