350000

素因数分解:

$2^4\times 5^5\times 7^1$

素因数の和:40

約数の個数: 60

約数和(自身を含む): 968688

約数和(自身を除く): 618688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 175, 200, 250, 280, 350, 400, 500, 560, 625, 700, 875, 1000, 1250, 1400, 1750, 2000, 2500, 2800, 3125, 3500, 4375, 5000, 6250, 7000, 8750, 10000, 12500, 14000, 17500, 21875, 25000, 35000, 43750, 50000, 70000, 87500, 175000, 350000]

約数ペア:

[(1, 350000), (2, 175000), (4, 87500), (5, 70000), (7, 50000), (8, 43750), (10, 35000), (14, 25000), (16, 21875), (20, 17500), (25, 14000), (28, 12500), (35, 10000), (40, 8750), (50, 7000), (56, 6250), (70, 5000), (80, 4375), (100, 3500), (112, 3125), (125, 2800), (140, 2500), (175, 2000), (200, 1750), (250, 1400), (280, 1250), (350, 1000), (400, 875), (500, 700), (560, 625)]