20814440

素因数分解:

$2^3\times 5^1\times {\mathrm{520361}}^1$

素因数の和:520372

約数の個数: 16

約数和(自身を含む): 46832580

約数和(自身を除く): 26018140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520361, 1040722, 2081444, 2601805, 4162888, 5203610, 10407220, 20814440]

約数ペア:

[(1, 20814440), (2, 10407220), (4, 5203610), (5, 4162888), (8, 2601805), (10, 2081444), (20, 1040722), (40, 520361)]