81049920

素因数分解:

$2^6\times 3^1\times 5^1\times 7^2\times {\mathrm{1723}}^1$

素因数の和:1757

約数の個数: 168

約数和(自身を含む): 299520864

約数和(自身を除く): 218470944

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 280, 294, 320, 336, 392, 420, 448, 480, 490, 560, 588, 672, 735, 784, 840, 960, 980, 1120, 1176, 1344, 1470, 1568, 1680, 1723, 1960, 2240, 2352, 2940, 3136, 3360, 3446, 3920, 4704, 5169, 5880, 6720, 6892, 7840, 8615, 9408, 10338, 11760, 12061, 13784, 15680, 17230, 20676, 23520, 24122, 25845, 27568, 34460, 36183, 41352, 47040, 48244, 51690, 55136, 60305, 68920, 72366, 82704, 84427, 96488, 103380, 110272, 120610, 137840, 144732, 165408, 168854, 180915, 192976, 206760, 241220, 253281, 275680, 289464, 330816, 337708, 361830, 385952, 413520, 422135, 482440, 506562, 551360, 578928, 675416, 723660, 771904, 827040, 844270, 964880, 1013124, 1157856, 1266405, 1350832, 1447320, 1654080, 1688540, 1929760, 2026248, 2315712, 2532810, 2701664, 2894640, 3377080, 3859520, 4052496, 5065620, 5403328, 5789280, 6754160, 8104992, 10131240, 11578560, 13508320, 16209984, 20262480, 27016640, 40524960, 81049920]

約数ペア:

[(1, 81049920), (2, 40524960), (3, 27016640), (4, 20262480), (5, 16209984), (6, 13508320), (7, 11578560), (8, 10131240), (10, 8104992), (12, 6754160), (14, 5789280), (15, 5403328), (16, 5065620), (20, 4052496), (21, 3859520), (24, 3377080), (28, 2894640), (30, 2701664), (32, 2532810), (35, 2315712), (40, 2026248), (42, 1929760), (48, 1688540), (49, 1654080), (56, 1447320), (60, 1350832), (64, 1266405), (70, 1157856), (80, 1013124), (84, 964880), (96, 844270), (98, 827040), (105, 771904), (112, 723660), (120, 675416), (140, 578928), (147, 551360), (160, 506562), (168, 482440), (192, 422135), (196, 413520), (210, 385952), (224, 361830), (240, 337708), (245, 330816), (280, 289464), (294, 275680), (320, 253281), (336, 241220), (392, 206760), (420, 192976), (448, 180915), (480, 168854), (490, 165408), (560, 144732), (588, 137840), (672, 120610), (735, 110272), (784, 103380), (840, 96488), (960, 84427), (980, 82704), (1120, 72366), (1176, 68920), (1344, 60305), (1470, 55136), (1568, 51690), (1680, 48244), (1723, 47040), (1960, 41352), (2240, 36183), (2352, 34460), (2940, 27568), (3136, 25845), (3360, 24122), (3446, 23520), (3920, 20676), (4704, 17230), (5169, 15680), (5880, 13784), (6720, 12061), (6892, 11760), (7840, 10338), (8615, 9408)]