21088760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 60963840

約数和(自身を除く): 39875080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 41, 44, 55, 56, 70, 77, 82, 88, 110, 140, 154, 164, 167, 205, 220, 280, 287, 308, 328, 334, 385, 410, 440, 451, 574, 616, 668, 770, 820, 835, 902, 1148, 1169, 1336, 1435, 1540, 1640, 1670, 1804, 1837, 2255, 2296, 2338, 2870, 3080, 3157, 3340, 3608, 3674, 4510, 4676, 5740, 5845, 6314, 6680, 6847, 7348, 9020, 9185, 9352, 11480, 11690, 12628, 12859, 13694, 14696, 15785, 18040, 18370, 23380, 25256, 25718, 27388, 31570, 34235, 36740, 46760, 47929, 51436, 54776, 63140, 64295, 68470, 73480, 75317, 95858, 102872, 126280, 128590, 136940, 150634, 191716, 239645, 257180, 273880, 301268, 376585, 383432, 479290, 514360, 527219, 602536, 753170, 958580, 1054438, 1506340, 1917160, 2108876, 2636095, 3012680, 4217752, 5272190, 10544380, 21088760]

約数ペア:

[(1, 21088760), (2, 10544380), (4, 5272190), (5, 4217752), (7, 3012680), (8, 2636095), (10, 2108876), (11, 1917160), (14, 1506340), (20, 1054438), (22, 958580), (28, 753170), (35, 602536), (40, 527219), (41, 514360), (44, 479290), (55, 383432), (56, 376585), (70, 301268), (77, 273880), (82, 257180), (88, 239645), (110, 191716), (140, 150634), (154, 136940), (164, 128590), (167, 126280), (205, 102872), (220, 95858), (280, 75317), (287, 73480), (308, 68470), (328, 64295), (334, 63140), (385, 54776), (410, 51436), (440, 47929), (451, 46760), (574, 36740), (616, 34235), (668, 31570), (770, 27388), (820, 25718), (835, 25256), (902, 23380), (1148, 18370), (1169, 18040), (1336, 15785), (1435, 14696), (1540, 13694), (1640, 12859), (1670, 12628), (1804, 11690), (1837, 11480), (2255, 9352), (2296, 9185), (2338, 9020), (2870, 7348), (3080, 6847), (3157, 6680), (3340, 6314), (3608, 5845), (3674, 5740), (4510, 4676)]