20861530

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26407}}^1$

素因数の和:26493

約数の個数: 16

約数和(自身を含む): 38027520

約数和(自身を除く): 17165990

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 26407, 52814, 132035, 264070, 2086153, 4172306, 10430765, 20861530]

約数ペア:

[(1, 20861530), (2, 10430765), (5, 4172306), (10, 2086153), (79, 264070), (158, 132035), (395, 52814), (790, 26407)]