12900040

素因数分解:

$2^3\times 5^1\times {\mathrm{322501}}^1$

素因数の和:322512

約数の個数: 16

約数和(自身を含む): 29025180

約数和(自身を除く): 16125140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 322501, 645002, 1290004, 1612505, 2580008, 3225010, 6450020, 12900040]

約数ペア:

[(1, 12900040), (2, 6450020), (4, 3225010), (5, 2580008), (8, 1612505), (10, 1290004), (20, 645002), (40, 322501)]