28721056

素因数分解:

$2^5\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1409}}^1$

素因数の和:1446

約数の個数: 72

約数和(自身を含む): 70886340

約数和(自身を除く): 42165284

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 224, 364, 392, 416, 637, 728, 784, 1274, 1409, 1456, 1568, 2548, 2818, 2912, 5096, 5636, 9863, 10192, 11272, 18317, 19726, 20384, 22544, 36634, 39452, 45088, 69041, 73268, 78904, 128219, 138082, 146536, 157808, 256438, 276164, 293072, 315616, 512876, 552328, 586144, 897533, 1025752, 1104656, 1795066, 2051504, 2209312, 3590132, 4103008, 7180264, 14360528, 28721056]

約数ペア:

[(1, 28721056), (2, 14360528), (4, 7180264), (7, 4103008), (8, 3590132), (13, 2209312), (14, 2051504), (16, 1795066), (26, 1104656), (28, 1025752), (32, 897533), (49, 586144), (52, 552328), (56, 512876), (91, 315616), (98, 293072), (104, 276164), (112, 256438), (182, 157808), (196, 146536), (208, 138082), (224, 128219), (364, 78904), (392, 73268), (416, 69041), (637, 45088), (728, 39452), (784, 36634), (1274, 22544), (1409, 20384), (1456, 19726), (1568, 18317), (2548, 11272), (2818, 10192), (2912, 9863), (5096, 5636)]