20139905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{2099}}^1$

素因数の和:2224

約数の個数: 16

約数和(自身を含む): 25704000

約数和(自身を除く): 5564095

約数列:

[1, 5, 19, 95, 101, 505, 1919, 2099, 9595, 10495, 39881, 199405, 211999, 1059995, 4027981, 20139905]

約数ペア:

[(1, 20139905), (5, 4027981), (19, 1059995), (95, 211999), (101, 199405), (505, 39881), (1919, 10495), (2099, 9595)]