200000

素因数分解:

$2^6\times 5^5$

素因数の和:37

約数の個数: 42

約数和(自身を含む): 496062

約数和(自身を除く): 296062

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 625, 800, 1000, 1250, 1600, 2000, 2500, 3125, 4000, 5000, 6250, 8000, 10000, 12500, 20000, 25000, 40000, 50000, 100000, 200000]

約数ペア:

[(1, 200000), (2, 100000), (4, 50000), (5, 40000), (8, 25000), (10, 20000), (16, 12500), (20, 10000), (25, 8000), (32, 6250), (40, 5000), (50, 4000), (64, 3125), (80, 2500), (100, 2000), (125, 1600), (160, 1250), (200, 1000), (250, 800), (320, 625), (400, 500)]