78459920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:349

約数の個数: 160

約数和(自身を含む): 233127936

約数和(自身を除く): 154668016

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 47, 55, 56, 70, 77, 80, 88, 94, 110, 112, 140, 154, 176, 188, 220, 235, 271, 280, 308, 329, 376, 385, 440, 470, 517, 542, 560, 616, 658, 752, 770, 880, 940, 1034, 1084, 1232, 1316, 1355, 1540, 1645, 1880, 1897, 2068, 2168, 2585, 2632, 2710, 2981, 3080, 3290, 3619, 3760, 3794, 4136, 4336, 5170, 5264, 5420, 5962, 6160, 6580, 7238, 7588, 8272, 9485, 10340, 10840, 11924, 12737, 13160, 14476, 14905, 15176, 18095, 18970, 20680, 20867, 21680, 23848, 25474, 26320, 28952, 29810, 30352, 36190, 37940, 41360, 41734, 47696, 50948, 57904, 59620, 63685, 72380, 75880, 83468, 89159, 101896, 104335, 119240, 127370, 140107, 144760, 151760, 166936, 178318, 203792, 208670, 238480, 254740, 280214, 289520, 333872, 356636, 417340, 445795, 509480, 560428, 700535, 713272, 834680, 891590, 980749, 1018960, 1120856, 1401070, 1426544, 1669360, 1783180, 1961498, 2241712, 2802140, 3566360, 3922996, 4903745, 5604280, 7132720, 7845992, 9807490, 11208560, 15691984, 19614980, 39229960, 78459920]

約数ペア:

[(1, 78459920), (2, 39229960), (4, 19614980), (5, 15691984), (7, 11208560), (8, 9807490), (10, 7845992), (11, 7132720), (14, 5604280), (16, 4903745), (20, 3922996), (22, 3566360), (28, 2802140), (35, 2241712), (40, 1961498), (44, 1783180), (47, 1669360), (55, 1426544), (56, 1401070), (70, 1120856), (77, 1018960), (80, 980749), (88, 891590), (94, 834680), (110, 713272), (112, 700535), (140, 560428), (154, 509480), (176, 445795), (188, 417340), (220, 356636), (235, 333872), (271, 289520), (280, 280214), (308, 254740), (329, 238480), (376, 208670), (385, 203792), (440, 178318), (470, 166936), (517, 151760), (542, 144760), (560, 140107), (616, 127370), (658, 119240), (752, 104335), (770, 101896), (880, 89159), (940, 83468), (1034, 75880), (1084, 72380), (1232, 63685), (1316, 59620), (1355, 57904), (1540, 50948), (1645, 47696), (1880, 41734), (1897, 41360), (2068, 37940), (2168, 36190), (2585, 30352), (2632, 29810), (2710, 28952), (2981, 26320), (3080, 25474), (3290, 23848), (3619, 21680), (3760, 20867), (3794, 20680), (4136, 18970), (4336, 18095), (5170, 15176), (5264, 14905), (5420, 14476), (5962, 13160), (6160, 12737), (6580, 11924), (7238, 10840), (7588, 10340), (8272, 9485)]