2840540

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1303}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 6024480

約数和(自身を除く): 3183940

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 1303, 2180, 2606, 5212, 6515, 13030, 26060, 142027, 284054, 568108, 710135, 1420270, 2840540]

約数ペア:

[(1, 2840540), (2, 1420270), (4, 710135), (5, 568108), (10, 284054), (20, 142027), (109, 26060), (218, 13030), (436, 6515), (545, 5212), (1090, 2606), (1303, 2180)]