19247720

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1237}}^1$

素因数の和:1637

約数の個数: 32

約数和(自身を含む): 43453800

約数和(自身を除く): 24206080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1237, 1556, 1945, 2474, 3112, 3890, 4948, 6185, 7780, 9896, 12370, 15560, 24740, 49480, 481193, 962386, 1924772, 2405965, 3849544, 4811930, 9623860, 19247720]

約数ペア:

[(1, 19247720), (2, 9623860), (4, 4811930), (5, 3849544), (8, 2405965), (10, 1924772), (20, 962386), (40, 481193), (389, 49480), (778, 24740), (1237, 15560), (1556, 12370), (1945, 9896), (2474, 7780), (3112, 6185), (3890, 4948)]