19430020

素因数分解:

$2^2\times 5^1\times {\mathrm{971501}}^1$

素因数の和:971510

約数の個数: 12

約数和(自身を含む): 40803084

約数和(自身を除く): 21373064

約数列:

[1, 2, 4, 5, 10, 20, 971501, 1943002, 3886004, 4857505, 9715010, 19430020]

約数ペア:

[(1, 19430020), (2, 9715010), (4, 4857505), (5, 3886004), (10, 1943002), (20, 971501)]