20711808

素因数分解:

$2^7\times 3^3\times {\mathrm{13}}^1\times {\mathrm{461}}^1$

素因数の和:497

約数の個数: 128

約数和(自身を含む): 65973600

約数和(自身を除く): 45261792

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 64, 72, 78, 96, 104, 108, 117, 128, 144, 156, 192, 208, 216, 234, 288, 312, 351, 384, 416, 432, 461, 468, 576, 624, 702, 832, 864, 922, 936, 1152, 1248, 1383, 1404, 1664, 1728, 1844, 1872, 2496, 2766, 2808, 3456, 3688, 3744, 4149, 4992, 5532, 5616, 5993, 7376, 7488, 8298, 11064, 11232, 11986, 12447, 14752, 14976, 16596, 17979, 22128, 22464, 23972, 24894, 29504, 33192, 35958, 44256, 44928, 47944, 49788, 53937, 59008, 66384, 71916, 88512, 95888, 99576, 107874, 132768, 143832, 161811, 177024, 191776, 199152, 215748, 265536, 287664, 323622, 383552, 398304, 431496, 531072, 575328, 647244, 767104, 796608, 862992, 1150656, 1294488, 1593216, 1725984, 2301312, 2588976, 3451968, 5177952, 6903936, 10355904, 20711808]

約数ペア:

[(1, 20711808), (2, 10355904), (3, 6903936), (4, 5177952), (6, 3451968), (8, 2588976), (9, 2301312), (12, 1725984), (13, 1593216), (16, 1294488), (18, 1150656), (24, 862992), (26, 796608), (27, 767104), (32, 647244), (36, 575328), (39, 531072), (48, 431496), (52, 398304), (54, 383552), (64, 323622), (72, 287664), (78, 265536), (96, 215748), (104, 199152), (108, 191776), (117, 177024), (128, 161811), (144, 143832), (156, 132768), (192, 107874), (208, 99576), (216, 95888), (234, 88512), (288, 71916), (312, 66384), (351, 59008), (384, 53937), (416, 49788), (432, 47944), (461, 44928), (468, 44256), (576, 35958), (624, 33192), (702, 29504), (832, 24894), (864, 23972), (922, 22464), (936, 22128), (1152, 17979), (1248, 16596), (1383, 14976), (1404, 14752), (1664, 12447), (1728, 11986), (1844, 11232), (1872, 11064), (2496, 8298), (2766, 7488), (2808, 7376), (3456, 5993), (3688, 5616), (3744, 5532), (4149, 4992)]