19507120

素因数分解:

$2^4\times 5^1\times {\mathrm{243839}}^1$

素因数の和:243852

約数の個数: 20

約数和(自身を含む): 45354240

約数和(自身を除く): 25847120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243839, 487678, 975356, 1219195, 1950712, 2438390, 3901424, 4876780, 9753560, 19507120]

約数ペア:

[(1, 19507120), (2, 9753560), (4, 4876780), (5, 3901424), (8, 2438390), (10, 1950712), (16, 1219195), (20, 975356), (40, 487678), (80, 243839)]