245000

素因数分解:

$2^3\times 5^4\times 7^2$

素因数の和:40

約数の個数: 60

約数和(自身を含む): 667755

約数和(自身を除く): 422755

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 125, 140, 175, 196, 200, 245, 250, 280, 350, 392, 490, 500, 625, 700, 875, 980, 1000, 1225, 1250, 1400, 1750, 1960, 2450, 2500, 3500, 4375, 4900, 5000, 6125, 7000, 8750, 9800, 12250, 17500, 24500, 30625, 35000, 49000, 61250, 122500, 245000]

約数ペア:

[(1, 245000), (2, 122500), (4, 61250), (5, 49000), (7, 35000), (8, 30625), (10, 24500), (14, 17500), (20, 12250), (25, 9800), (28, 8750), (35, 7000), (40, 6125), (49, 5000), (50, 4900), (56, 4375), (70, 3500), (98, 2500), (100, 2450), (125, 1960), (140, 1750), (175, 1400), (196, 1250), (200, 1225), (245, 1000), (250, 980), (280, 875), (350, 700), (392, 625), (490, 500)]