40396000

素因数分解:

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

素因数の和:10124

約数の個数: 48

約数和(自身を含む): 99262800

約数和(自身を除く): 58866800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 10099, 20198, 40396, 50495, 80792, 100990, 161584, 201980, 252475, 323168, 403960, 504950, 807920, 1009900, 1262375, 1615840, 2019800, 2524750, 4039600, 5049500, 8079200, 10099000, 20198000, 40396000]

約数ペア:

[(1, 40396000), (2, 20198000), (4, 10099000), (5, 8079200), (8, 5049500), (10, 4039600), (16, 2524750), (20, 2019800), (25, 1615840), (32, 1262375), (40, 1009900), (50, 807920), (80, 504950), (100, 403960), (125, 323168), (160, 252475), (200, 201980), (250, 161584), (400, 100990), (500, 80792), (800, 50495), (1000, 40396), (2000, 20198), (4000, 10099)]