25540040

素因数分解:

$2^3\times 5^1\times {\mathrm{638501}}^1$

素因数の和:638512

約数の個数: 16

約数和(自身を含む): 57465180

約数和(自身を除く): 31925140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 638501, 1277002, 2554004, 3192505, 5108008, 6385010, 12770020, 25540040]

約数ペア:

[(1, 25540040), (2, 12770020), (4, 6385010), (5, 5108008), (8, 3192505), (10, 2554004), (20, 1277002), (40, 638501)]