12778000

素因数分解:

$2^4\times 5^3\times {\mathrm{6389}}^1$

素因数の和:6412

約数の個数: 40

約数和(自身を含む): 30902040

約数和(自身を除く): 18124040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 6389, 12778, 25556, 31945, 51112, 63890, 102224, 127780, 159725, 255560, 319450, 511120, 638900, 798625, 1277800, 1597250, 2555600, 3194500, 6389000, 12778000]

約数ペア:

[(1, 12778000), (2, 6389000), (4, 3194500), (5, 2555600), (8, 1597250), (10, 1277800), (16, 798625), (20, 638900), (25, 511120), (40, 319450), (50, 255560), (80, 159725), (100, 127780), (125, 102224), (200, 63890), (250, 51112), (400, 31945), (500, 25556), (1000, 12778), (2000, 6389)]