77617960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{199}}^2$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 204179130

約数和(自身を除く): 126561170

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 199, 245, 280, 392, 398, 490, 796, 980, 995, 1393, 1592, 1960, 1990, 2786, 3980, 5572, 6965, 7960, 9751, 11144, 13930, 19502, 27860, 39004, 39601, 48755, 55720, 78008, 79202, 97510, 158404, 195020, 198005, 277207, 316808, 390040, 396010, 554414, 792020, 1108828, 1386035, 1584040, 1940449, 2217656, 2772070, 3880898, 5544140, 7761796, 9702245, 11088280, 15523592, 19404490, 38808980, 77617960]

約数ペア:

[(1, 77617960), (2, 38808980), (4, 19404490), (5, 15523592), (7, 11088280), (8, 9702245), (10, 7761796), (14, 5544140), (20, 3880898), (28, 2772070), (35, 2217656), (40, 1940449), (49, 1584040), (56, 1386035), (70, 1108828), (98, 792020), (140, 554414), (196, 396010), (199, 390040), (245, 316808), (280, 277207), (392, 198005), (398, 195020), (490, 158404), (796, 97510), (980, 79202), (995, 78008), (1393, 55720), (1592, 48755), (1960, 39601), (1990, 39004), (2786, 27860), (3980, 19502), (5572, 13930), (6965, 11144), (7960, 9751)]