39800000

素因数分解:

$2^6\times 5^5\times {\mathrm{199}}^1$

素因数の和:236

約数の個数: 84

約数和(自身を含む): 99212400

約数和(自身を除く): 59412400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 199, 200, 250, 320, 398, 400, 500, 625, 796, 800, 995, 1000, 1250, 1592, 1600, 1990, 2000, 2500, 3125, 3184, 3980, 4000, 4975, 5000, 6250, 6368, 7960, 8000, 9950, 10000, 12500, 12736, 15920, 19900, 20000, 24875, 25000, 31840, 39800, 40000, 49750, 50000, 63680, 79600, 99500, 100000, 124375, 159200, 199000, 200000, 248750, 318400, 398000, 497500, 621875, 796000, 995000, 1243750, 1592000, 1990000, 2487500, 3980000, 4975000, 7960000, 9950000, 19900000, 39800000]

約数ペア:

[(1, 39800000), (2, 19900000), (4, 9950000), (5, 7960000), (8, 4975000), (10, 3980000), (16, 2487500), (20, 1990000), (25, 1592000), (32, 1243750), (40, 995000), (50, 796000), (64, 621875), (80, 497500), (100, 398000), (125, 318400), (160, 248750), (199, 200000), (200, 199000), (250, 159200), (320, 124375), (398, 100000), (400, 99500), (500, 79600), (625, 63680), (796, 50000), (800, 49750), (995, 40000), (1000, 39800), (1250, 31840), (1592, 25000), (1600, 24875), (1990, 20000), (2000, 19900), (2500, 15920), (3125, 12736), (3184, 12500), (3980, 10000), (4000, 9950), (4975, 8000), (5000, 7960), (6250, 6368)]