489020

素因数分解:

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

素因数の和:522

約数の個数: 36

約数和(自身を含む): 1197000

約数和(自身を除く): 707980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 499, 980, 998, 1996, 2495, 3493, 4990, 6986, 9980, 13972, 17465, 24451, 34930, 48902, 69860, 97804, 122255, 244510, 489020]

約数ペア:

[(1, 489020), (2, 244510), (4, 122255), (5, 97804), (7, 69860), (10, 48902), (14, 34930), (20, 24451), (28, 17465), (35, 13972), (49, 9980), (70, 6986), (98, 4990), (140, 3493), (196, 2495), (245, 1996), (490, 998), (499, 980)]