28001376

素因数分解:

$2^5\times 3^5\times {\mathrm{13}}^1\times {\mathrm{277}}^1$

素因数の和:315

約数の個数: 144

約数和(自身を含む): 89251344

約数和(自身を除く): 61249968

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 72, 78, 81, 96, 104, 108, 117, 144, 156, 162, 208, 216, 234, 243, 277, 288, 312, 324, 351, 416, 432, 468, 486, 554, 624, 648, 702, 831, 864, 936, 972, 1053, 1108, 1248, 1296, 1404, 1662, 1872, 1944, 2106, 2216, 2493, 2592, 2808, 3159, 3324, 3601, 3744, 3888, 4212, 4432, 4986, 5616, 6318, 6648, 7202, 7479, 7776, 8424, 8864, 9972, 10803, 11232, 12636, 13296, 14404, 14958, 16848, 19944, 21606, 22437, 25272, 26592, 28808, 29916, 32409, 33696, 39888, 43212, 44874, 50544, 57616, 59832, 64818, 67311, 79776, 86424, 89748, 97227, 101088, 115232, 119664, 129636, 134622, 172848, 179496, 194454, 239328, 259272, 269244, 291681, 345696, 358992, 388908, 518544, 538488, 583362, 717984, 777816, 875043, 1037088, 1076976, 1166724, 1555632, 1750086, 2153952, 2333448, 3111264, 3500172, 4666896, 7000344, 9333792, 14000688, 28001376]

約数ペア:

[(1, 28001376), (2, 14000688), (3, 9333792), (4, 7000344), (6, 4666896), (8, 3500172), (9, 3111264), (12, 2333448), (13, 2153952), (16, 1750086), (18, 1555632), (24, 1166724), (26, 1076976), (27, 1037088), (32, 875043), (36, 777816), (39, 717984), (48, 583362), (52, 538488), (54, 518544), (72, 388908), (78, 358992), (81, 345696), (96, 291681), (104, 269244), (108, 259272), (117, 239328), (144, 194454), (156, 179496), (162, 172848), (208, 134622), (216, 129636), (234, 119664), (243, 115232), (277, 101088), (288, 97227), (312, 89748), (324, 86424), (351, 79776), (416, 67311), (432, 64818), (468, 59832), (486, 57616), (554, 50544), (624, 44874), (648, 43212), (702, 39888), (831, 33696), (864, 32409), (936, 29916), (972, 28808), (1053, 26592), (1108, 25272), (1248, 22437), (1296, 21606), (1404, 19944), (1662, 16848), (1872, 14958), (1944, 14404), (2106, 13296), (2216, 12636), (2493, 11232), (2592, 10803), (2808, 9972), (3159, 8864), (3324, 8424), (3601, 7776), (3744, 7479), (3888, 7202), (4212, 6648), (4432, 6318), (4986, 5616)]