19447280

素因数分解:

$2^4\times 5^1\times {\mathrm{243091}}^1$

素因数の和:243104

約数の個数: 20

約数和(自身を含む): 45215112

約数和(自身を除く): 25767832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243091, 486182, 972364, 1215455, 1944728, 2430910, 3889456, 4861820, 9723640, 19447280]

約数ペア:

[(1, 19447280), (2, 9723640), (4, 4861820), (5, 3889456), (8, 2430910), (10, 1944728), (16, 1215455), (20, 972364), (40, 486182), (80, 243091)]