20399456

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{487}}^1$

素因数の和:532

約数の個数: 96

約数和(自身を含む): 53125632

約数和(自身を除く): 32726176

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 28, 32, 34, 44, 56, 68, 77, 88, 112, 119, 136, 154, 176, 187, 224, 238, 272, 308, 352, 374, 476, 487, 544, 616, 748, 952, 974, 1232, 1309, 1496, 1904, 1948, 2464, 2618, 2992, 3409, 3808, 3896, 5236, 5357, 5984, 6818, 7792, 8279, 10472, 10714, 13636, 15584, 16558, 20944, 21428, 27272, 33116, 37499, 41888, 42856, 54544, 57953, 66232, 74998, 85712, 91069, 109088, 115906, 132464, 149996, 171424, 182138, 231812, 264928, 299992, 364276, 463624, 599984, 637483, 728552, 927248, 1199968, 1274966, 1457104, 1854496, 2549932, 2914208, 5099864, 10199728, 20399456]

約数ペア:

[(1, 20399456), (2, 10199728), (4, 5099864), (7, 2914208), (8, 2549932), (11, 1854496), (14, 1457104), (16, 1274966), (17, 1199968), (22, 927248), (28, 728552), (32, 637483), (34, 599984), (44, 463624), (56, 364276), (68, 299992), (77, 264928), (88, 231812), (112, 182138), (119, 171424), (136, 149996), (154, 132464), (176, 115906), (187, 109088), (224, 91069), (238, 85712), (272, 74998), (308, 66232), (352, 57953), (374, 54544), (476, 42856), (487, 41888), (544, 37499), (616, 33116), (748, 27272), (952, 21428), (974, 20944), (1232, 16558), (1309, 15584), (1496, 13636), (1904, 10714), (1948, 10472), (2464, 8279), (2618, 7792), (2992, 6818), (3409, 5984), (3808, 5357), (3896, 5236)]