20412440

素因数分解:

$2^3\times 5^1\times {\mathrm{510311}}^1$

素因数の和:510322

約数の個数: 16

約数和(自身を含む): 45928080

約数和(自身を除く): 25515640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510311, 1020622, 2041244, 2551555, 4082488, 5103110, 10206220, 20412440]

約数ペア:

[(1, 20412440), (2, 10206220), (4, 5103110), (5, 4082488), (8, 2551555), (10, 2041244), (20, 1020622), (40, 510311)]