21091840

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1$

素因数の和:148

約数の個数: 160

約数和(自身を含む): 63638784

約数和(自身を除く): 42546944

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 107, 110, 112, 128, 140, 154, 160, 176, 214, 220, 224, 256, 280, 308, 320, 352, 385, 428, 440, 448, 512, 535, 560, 616, 640, 704, 749, 770, 856, 880, 896, 1070, 1120, 1177, 1232, 1280, 1408, 1498, 1540, 1712, 1760, 1792, 2140, 2240, 2354, 2464, 2560, 2816, 2996, 3080, 3424, 3520, 3584, 3745, 4280, 4480, 4708, 4928, 5632, 5885, 5992, 6160, 6848, 7040, 7490, 8239, 8560, 8960, 9416, 9856, 11770, 11984, 12320, 13696, 14080, 14980, 16478, 17120, 17920, 18832, 19712, 23540, 23968, 24640, 27392, 28160, 29960, 32956, 34240, 37664, 39424, 41195, 47080, 47936, 49280, 54784, 59920, 65912, 68480, 75328, 82390, 94160, 95872, 98560, 119840, 131824, 136960, 150656, 164780, 188320, 191744, 197120, 239680, 263648, 273920, 301312, 329560, 376640, 383488, 479360, 527296, 602624, 659120, 753280, 958720, 1054592, 1318240, 1506560, 1917440, 2109184, 2636480, 3013120, 4218368, 5272960, 10545920, 21091840]

約数ペア:

[(1, 21091840), (2, 10545920), (4, 5272960), (5, 4218368), (7, 3013120), (8, 2636480), (10, 2109184), (11, 1917440), (14, 1506560), (16, 1318240), (20, 1054592), (22, 958720), (28, 753280), (32, 659120), (35, 602624), (40, 527296), (44, 479360), (55, 383488), (56, 376640), (64, 329560), (70, 301312), (77, 273920), (80, 263648), (88, 239680), (107, 197120), (110, 191744), (112, 188320), (128, 164780), (140, 150656), (154, 136960), (160, 131824), (176, 119840), (214, 98560), (220, 95872), (224, 94160), (256, 82390), (280, 75328), (308, 68480), (320, 65912), (352, 59920), (385, 54784), (428, 49280), (440, 47936), (448, 47080), (512, 41195), (535, 39424), (560, 37664), (616, 34240), (640, 32956), (704, 29960), (749, 28160), (770, 27392), (856, 24640), (880, 23968), (896, 23540), (1070, 19712), (1120, 18832), (1177, 17920), (1232, 17120), (1280, 16478), (1408, 14980), (1498, 14080), (1540, 13696), (1712, 12320), (1760, 11984), (1792, 11770), (2140, 9856), (2240, 9416), (2354, 8960), (2464, 8560), (2560, 8239), (2816, 7490), (2996, 7040), (3080, 6848), (3424, 6160), (3520, 5992), (3584, 5885), (3745, 5632), (4280, 4928), (4480, 4708)]