21480040

素因数分解:

$2^3\times 5^1\times {\mathrm{537001}}^1$

素因数の和:537012

約数の個数: 16

約数和(自身を含む): 48330180

約数和(自身を除く): 26850140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 537001, 1074002, 2148004, 2685005, 4296008, 5370010, 10740020, 21480040]

約数ペア:

[(1, 21480040), (2, 10740020), (4, 5370010), (5, 4296008), (8, 2685005), (10, 2148004), (20, 1074002), (40, 537001)]