28217728

素因数分解:

$2^7\times 7^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1$

素因数の和:448

約数の個数: 96

約数和(自身を含む): 71512200

約数和(自身を除く): 43294472

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 49, 56, 64, 77, 88, 98, 112, 128, 154, 176, 196, 224, 308, 352, 392, 409, 448, 539, 616, 704, 784, 818, 896, 1078, 1232, 1408, 1568, 1636, 2156, 2464, 2863, 3136, 3272, 4312, 4499, 4928, 5726, 6272, 6544, 8624, 8998, 9856, 11452, 13088, 17248, 17996, 20041, 22904, 26176, 31493, 34496, 35992, 40082, 45808, 52352, 62986, 68992, 71984, 80164, 91616, 125972, 143968, 160328, 183232, 220451, 251944, 287936, 320656, 366464, 440902, 503888, 575872, 641312, 881804, 1007776, 1282624, 1763608, 2015552, 2565248, 3527216, 4031104, 7054432, 14108864, 28217728]

約数ペア:

[(1, 28217728), (2, 14108864), (4, 7054432), (7, 4031104), (8, 3527216), (11, 2565248), (14, 2015552), (16, 1763608), (22, 1282624), (28, 1007776), (32, 881804), (44, 641312), (49, 575872), (56, 503888), (64, 440902), (77, 366464), (88, 320656), (98, 287936), (112, 251944), (128, 220451), (154, 183232), (176, 160328), (196, 143968), (224, 125972), (308, 91616), (352, 80164), (392, 71984), (409, 68992), (448, 62986), (539, 52352), (616, 45808), (704, 40082), (784, 35992), (818, 34496), (896, 31493), (1078, 26176), (1232, 22904), (1408, 20041), (1568, 17996), (1636, 17248), (2156, 13088), (2464, 11452), (2863, 9856), (3136, 8998), (3272, 8624), (4312, 6544), (4499, 6272), (4928, 5726)]