7200040

素因数分解:

$2^3\times 5^1\times {\mathrm{180001}}^1$

素因数の和:180012

約数の個数: 16

約数和(自身を含む): 16200180

約数和(自身を除く): 9000140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 180001, 360002, 720004, 900005, 1440008, 1800010, 3600020, 7200040]

約数ペア:

[(1, 7200040), (2, 3600020), (4, 1800010), (5, 1440008), (8, 900005), (10, 720004), (20, 360002), (40, 180001)]