1964000

素因数分解:

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

素因数の和:516

約数の個数: 48

約数和(自身を含む): 4835376

約数和(自身を除く): 2871376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 491, 500, 800, 982, 1000, 1964, 2000, 2455, 3928, 4000, 4910, 7856, 9820, 12275, 15712, 19640, 24550, 39280, 49100, 61375, 78560, 98200, 122750, 196400, 245500, 392800, 491000, 982000, 1964000]

約数ペア:

[(1, 1964000), (2, 982000), (4, 491000), (5, 392800), (8, 245500), (10, 196400), (16, 122750), (20, 98200), (25, 78560), (32, 61375), (40, 49100), (50, 39280), (80, 24550), (100, 19640), (125, 15712), (160, 12275), (200, 9820), (250, 7856), (400, 4910), (491, 4000), (500, 3928), (800, 2455), (982, 2000), (1000, 1964)]