21278976

素因数分解:

$2^8\times 3^1\times {\mathrm{103}}^1\times {\mathrm{269}}^1$

素因数の和:391

約数の個数: 72

約数和(自身を含む): 57395520

約数和(自身を除く): 36116544

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 103, 128, 192, 206, 256, 269, 309, 384, 412, 538, 618, 768, 807, 824, 1076, 1236, 1614, 1648, 2152, 2472, 3228, 3296, 4304, 4944, 6456, 6592, 8608, 9888, 12912, 13184, 17216, 19776, 25824, 26368, 27707, 34432, 39552, 51648, 55414, 68864, 79104, 83121, 103296, 110828, 166242, 206592, 221656, 332484, 443312, 664968, 886624, 1329936, 1773248, 2659872, 3546496, 5319744, 7092992, 10639488, 21278976]

約数ペア:

[(1, 21278976), (2, 10639488), (3, 7092992), (4, 5319744), (6, 3546496), (8, 2659872), (12, 1773248), (16, 1329936), (24, 886624), (32, 664968), (48, 443312), (64, 332484), (96, 221656), (103, 206592), (128, 166242), (192, 110828), (206, 103296), (256, 83121), (269, 79104), (309, 68864), (384, 55414), (412, 51648), (538, 39552), (618, 34432), (768, 27707), (807, 26368), (824, 25824), (1076, 19776), (1236, 17216), (1614, 13184), (1648, 12912), (2152, 9888), (2472, 8608), (3228, 6592), (3296, 6456), (4304, 4944)]