3240040

素因数分解:

$2^3\times 5^1\times {\mathrm{81001}}^1$

素因数の和:81012

約数の個数: 16

約数和(自身を含む): 7290180

約数和(自身を除く): 4050140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 81001, 162002, 324004, 405005, 648008, 810010, 1620020, 3240040]

約数ペア:

[(1, 3240040), (2, 1620020), (4, 810010), (5, 648008), (8, 405005), (10, 324004), (20, 162002), (40, 81001)]