21265504

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:168

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 28521632

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 31, 32, 34, 52, 62, 68, 97, 104, 124, 136, 194, 208, 221, 248, 272, 388, 403, 416, 442, 496, 527, 544, 776, 806, 884, 992, 1054, 1261, 1552, 1612, 1649, 1768, 2108, 2522, 3007, 3104, 3224, 3298, 3536, 4216, 5044, 6014, 6448, 6596, 6851, 7072, 8432, 10088, 12028, 12896, 13192, 13702, 16864, 20176, 21437, 24056, 26384, 27404, 39091, 40352, 42874, 48112, 51119, 52768, 54808, 78182, 85748, 96224, 102238, 109616, 156364, 171496, 204476, 219232, 312728, 342992, 408952, 625456, 664547, 685984, 817904, 1250912, 1329094, 1635808, 2658188, 5316376, 10632752, 21265504]

約数ペア:

[(1, 21265504), (2, 10632752), (4, 5316376), (8, 2658188), (13, 1635808), (16, 1329094), (17, 1250912), (26, 817904), (31, 685984), (32, 664547), (34, 625456), (52, 408952), (62, 342992), (68, 312728), (97, 219232), (104, 204476), (124, 171496), (136, 156364), (194, 109616), (208, 102238), (221, 96224), (248, 85748), (272, 78182), (388, 54808), (403, 52768), (416, 51119), (442, 48112), (496, 42874), (527, 40352), (544, 39091), (776, 27404), (806, 26384), (884, 24056), (992, 21437), (1054, 20176), (1261, 16864), (1552, 13702), (1612, 13192), (1649, 12896), (1768, 12028), (2108, 10088), (2522, 8432), (3007, 7072), (3104, 6851), (3224, 6596), (3298, 6448), (3536, 6014), (4216, 5044)]