19447700

素因数分解:

$2^2\times 5^2\times {\mathrm{439}}^1\times {\mathrm{443}}^1$

素因数の和:896

約数の個数: 36

約数和(自身を含む): 42393120

約数和(自身を除く): 22945420

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 439, 443, 878, 886, 1756, 1772, 2195, 2215, 4390, 4430, 8780, 8860, 10975, 11075, 21950, 22150, 43900, 44300, 194477, 388954, 777908, 972385, 1944770, 3889540, 4861925, 9723850, 19447700]

約数ペア:

[(1, 19447700), (2, 9723850), (4, 4861925), (5, 3889540), (10, 1944770), (20, 972385), (25, 777908), (50, 388954), (100, 194477), (439, 44300), (443, 43900), (878, 22150), (886, 21950), (1756, 11075), (1772, 10975), (2195, 8860), (2215, 8780), (4390, 4430)]