491000

素因数分解:

$2^3\times 5^3\times {\mathrm{491}}^1$

素因数の和:512

約数の個数: 32

約数和(自身を含む): 1151280

約数和(自身を除く): 660280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 491, 500, 982, 1000, 1964, 2455, 3928, 4910, 9820, 12275, 19640, 24550, 49100, 61375, 98200, 122750, 245500, 491000]

約数ペア:

[(1, 491000), (2, 245500), (4, 122750), (5, 98200), (8, 61375), (10, 49100), (20, 24550), (25, 19640), (40, 12275), (50, 9820), (100, 4910), (125, 3928), (200, 2455), (250, 1964), (491, 1000), (500, 982)]