640080

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{127}}^1$

素因数の和:153

約数の個数: 120

約数和(自身を含む): 2476032

約数和(自身を除く): 1835952

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 127, 140, 144, 168, 180, 210, 240, 252, 254, 280, 315, 336, 360, 381, 420, 504, 508, 560, 630, 635, 720, 762, 840, 889, 1008, 1016, 1143, 1260, 1270, 1524, 1680, 1778, 1905, 2032, 2286, 2520, 2540, 2667, 3048, 3556, 3810, 4445, 4572, 5040, 5080, 5334, 5715, 6096, 7112, 7620, 8001, 8890, 9144, 10160, 10668, 11430, 13335, 14224, 15240, 16002, 17780, 18288, 21336, 22860, 26670, 30480, 32004, 35560, 40005, 42672, 45720, 53340, 64008, 71120, 80010, 91440, 106680, 128016, 160020, 213360, 320040, 640080]

約数ペア:

[(1, 640080), (2, 320040), (3, 213360), (4, 160020), (5, 128016), (6, 106680), (7, 91440), (8, 80010), (9, 71120), (10, 64008), (12, 53340), (14, 45720), (15, 42672), (16, 40005), (18, 35560), (20, 32004), (21, 30480), (24, 26670), (28, 22860), (30, 21336), (35, 18288), (36, 17780), (40, 16002), (42, 15240), (45, 14224), (48, 13335), (56, 11430), (60, 10668), (63, 10160), (70, 9144), (72, 8890), (80, 8001), (84, 7620), (90, 7112), (105, 6096), (112, 5715), (120, 5334), (126, 5080), (127, 5040), (140, 4572), (144, 4445), (168, 3810), (180, 3556), (210, 3048), (240, 2667), (252, 2540), (254, 2520), (280, 2286), (315, 2032), (336, 1905), (360, 1778), (381, 1680), (420, 1524), (504, 1270), (508, 1260), (560, 1143), (630, 1016), (635, 1008), (720, 889), (762, 840)]