15388280

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1237}}^1$

素因数の和:1559

約数の個数: 32

約数和(自身を含む): 34763040

約数和(自身を除く): 19374760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1237, 1244, 1555, 2474, 2488, 3110, 4948, 6185, 6220, 9896, 12370, 12440, 24740, 49480, 384707, 769414, 1538828, 1923535, 3077656, 3847070, 7694140, 15388280]

約数ペア:

[(1, 15388280), (2, 7694140), (4, 3847070), (5, 3077656), (8, 1923535), (10, 1538828), (20, 769414), (40, 384707), (311, 49480), (622, 24740), (1237, 12440), (1244, 12370), (1555, 9896), (2474, 6220), (2488, 6185), (3110, 4948)]