28972660

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2239}}^1$

素因数の和:2895

約数の個数: 24

約数和(自身を含む): 60963840

約数和(自身を除く): 31991180

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2239, 2588, 3235, 4478, 6470, 8956, 11195, 12940, 22390, 44780, 1448633, 2897266, 5794532, 7243165, 14486330, 28972660]

約数ペア:

[(1, 28972660), (2, 14486330), (4, 7243165), (5, 5794532), (10, 2897266), (20, 1448633), (647, 44780), (1294, 22390), (2239, 12940), (2588, 11195), (3235, 8956), (4478, 6470)]