19290020

素因数分解:

$2^2\times 5^1\times {\mathrm{964501}}^1$

素因数の和:964510

約数の個数: 12

約数和(自身を含む): 40509084

約数和(自身を除く): 21219064

約数列:

[1, 2, 4, 5, 10, 20, 964501, 1929002, 3858004, 4822505, 9645010, 19290020]

約数ペア:

[(1, 19290020), (2, 9645010), (4, 4822505), (5, 3858004), (10, 1929002), (20, 964501)]