20190020

素因数分解:

$2^2\times 5^1\times {\mathrm{1009501}}^1$

素因数の和:1009510

約数の個数: 12

約数和(自身を含む): 42399084

約数和(自身を除く): 22209064

約数列:

[1, 2, 4, 5, 10, 20, 1009501, 2019002, 4038004, 5047505, 10095010, 20190020]

約数ペア:

[(1, 20190020), (2, 10095010), (4, 5047505), (5, 4038004), (10, 2019002), (20, 1009501)]