20105105

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{2213}}^1$

素因数の和:2320

約数の個数: 16

約数和(自身を含む): 25505280

約数和(自身を除く): 5400175

約数列:

[1, 5, 23, 79, 115, 395, 1817, 2213, 9085, 11065, 50899, 174827, 254495, 874135, 4021021, 20105105]

約数ペア:

[(1, 20105105), (5, 4021021), (23, 874135), (79, 254495), (115, 174827), (395, 50899), (1817, 11065), (2213, 9085)]