2520040

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^2$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 5692770

約数和(自身を除く): 3172730

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 63001, 126002, 252004, 315005, 504008, 630010, 1260020, 2520040]

約数ペア:

[(1, 2520040), (2, 1260020), (4, 630010), (5, 504008), (8, 315005), (10, 252004), (20, 126002), (40, 63001), (251, 10040), (502, 5020), (1004, 2510), (1255, 2008)]