978040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{499}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 2565000

約数和(自身を除く): 1586960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 499, 980, 998, 1960, 1996, 2495, 3493, 3992, 4990, 6986, 9980, 13972, 17465, 19960, 24451, 27944, 34930, 48902, 69860, 97804, 122255, 139720, 195608, 244510, 489020, 978040]

約数ペア:

[(1, 978040), (2, 489020), (4, 244510), (5, 195608), (7, 139720), (8, 122255), (10, 97804), (14, 69860), (20, 48902), (28, 34930), (35, 27944), (40, 24451), (49, 19960), (56, 17465), (70, 13972), (98, 9980), (140, 6986), (196, 4990), (245, 3992), (280, 3493), (392, 2495), (490, 1996), (499, 1960), (980, 998)]