19744880

素因数分解:

$2^4\times 5^1\times {\mathrm{246811}}^1$

素因数の和:246824

約数の個数: 20

約数和(自身を含む): 45907032

約数和(自身を除く): 26162152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246811, 493622, 987244, 1234055, 1974488, 2468110, 3948976, 4936220, 9872440, 19744880]

約数ペア:

[(1, 19744880), (2, 9872440), (4, 4936220), (5, 3948976), (8, 2468110), (10, 1974488), (16, 1234055), (20, 987244), (40, 493622), (80, 246811)]