21450005

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{617}}^1$

素因数の和:1048

約数の個数: 16

約数和(自身を含む): 27365040

約数和(自身を除く): 5915035

約数列:

[1, 5, 17, 85, 409, 617, 2045, 3085, 6953, 10489, 34765, 52445, 252353, 1261765, 4290001, 21450005]

約数ペア:

[(1, 21450005), (5, 4290001), (17, 1261765), (85, 252353), (409, 52445), (617, 34765), (2045, 10489), (3085, 6953)]