78220000

素因数分解:

$2^5\times 5^4\times {\mathrm{3911}}^1$

素因数の和:3941

約数の個数: 60

約数和(自身を含む): 192482136

約数和(自身を除く): 114262136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 3911, 4000, 5000, 7822, 10000, 15644, 19555, 20000, 31288, 39110, 62576, 78220, 97775, 125152, 156440, 195550, 312880, 391100, 488875, 625760, 782200, 977750, 1564400, 1955500, 2444375, 3128800, 3911000, 4888750, 7822000, 9777500, 15644000, 19555000, 39110000, 78220000]

約数ペア:

[(1, 78220000), (2, 39110000), (4, 19555000), (5, 15644000), (8, 9777500), (10, 7822000), (16, 4888750), (20, 3911000), (25, 3128800), (32, 2444375), (40, 1955500), (50, 1564400), (80, 977750), (100, 782200), (125, 625760), (160, 488875), (200, 391100), (250, 312880), (400, 195550), (500, 156440), (625, 125152), (800, 97775), (1000, 78220), (1250, 62576), (2000, 39110), (2500, 31288), (3911, 20000), (4000, 19555), (5000, 15644), (7822, 10000)]