20393905

素因数分解:

$5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{6547}}^1$

素因数の和:6648

約数の個数: 16

約数和(自身を含む): 28287360

約数和(自身を除く): 7893455

約数列:

[1, 5, 7, 35, 89, 445, 623, 3115, 6547, 32735, 45829, 229145, 582683, 2913415, 4078781, 20393905]

約数ペア:

[(1, 20393905), (5, 4078781), (7, 2913415), (35, 582683), (89, 229145), (445, 45829), (623, 32735), (3115, 6547)]