79619900

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{4001}}^1$

素因数の和:4214

約数の個数: 36

約数和(自身を含む): 173686800

約数和(自身を除く): 94066900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 995, 1990, 3980, 4001, 4975, 8002, 9950, 16004, 19900, 20005, 40010, 80020, 100025, 200050, 400100, 796199, 1592398, 3184796, 3980995, 7961990, 15923980, 19904975, 39809950, 79619900]

約数ペア:

[(1, 79619900), (2, 39809950), (4, 19904975), (5, 15923980), (10, 7961990), (20, 3980995), (25, 3184796), (50, 1592398), (100, 796199), (199, 400100), (398, 200050), (796, 100025), (995, 80020), (1990, 40010), (3980, 20005), (4001, 19900), (4975, 16004), (8002, 9950)]