20198000

素因数分解:

$2^4\times 5^3\times {\mathrm{10099}}^1$

素因数の和:10122

約数の個数: 40

約数和(自身を含む): 48843600

約数和(自身を除く): 28645600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10099, 20198, 40396, 50495, 80792, 100990, 161584, 201980, 252475, 403960, 504950, 807920, 1009900, 1262375, 2019800, 2524750, 4039600, 5049500, 10099000, 20198000]

約数ペア:

[(1, 20198000), (2, 10099000), (4, 5049500), (5, 4039600), (8, 2524750), (10, 2019800), (16, 1262375), (20, 1009900), (25, 807920), (40, 504950), (50, 403960), (80, 252475), (100, 201980), (125, 161584), (200, 100990), (250, 80792), (400, 50495), (500, 40396), (1000, 20198), (2000, 10099)]