20589905

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{13681}}^1$

素因数の和:13736

約数の個数: 16

約数和(自身を含む): 28896384

約数和(自身を除く): 8306479

約数列:

[1, 5, 7, 35, 43, 215, 301, 1505, 13681, 68405, 95767, 478835, 588283, 2941415, 4117981, 20589905]

約数ペア:

[(1, 20589905), (5, 4117981), (7, 2941415), (35, 588283), (43, 478835), (215, 95767), (301, 68405), (1505, 13681)]