20497565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{1931}}^1$

素因数の和:2140

約数の個数: 16

約数和(自身を含む): 26986176

約数和(自身を除く): 6488611

約数列:

[1, 5, 11, 55, 193, 965, 1931, 2123, 9655, 10615, 21241, 106205, 372683, 1863415, 4099513, 20497565]

約数ペア:

[(1, 20497565), (5, 4099513), (11, 1863415), (55, 372683), (193, 106205), (965, 21241), (1931, 10615), (2123, 9655)]