21181728

素因数分解:

$2^5\times 3^1\times {\mathrm{17}}^1\times {\mathrm{12979}}^1$

素因数の和:13009

約数の個数: 48

約数和(自身を含む): 58877280

約数和(自身を除く): 37695552

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 32, 34, 48, 51, 68, 96, 102, 136, 204, 272, 408, 544, 816, 1632, 12979, 25958, 38937, 51916, 77874, 103832, 155748, 207664, 220643, 311496, 415328, 441286, 622992, 661929, 882572, 1245984, 1323858, 1765144, 2647716, 3530288, 5295432, 7060576, 10590864, 21181728]

約数ペア:

[(1, 21181728), (2, 10590864), (3, 7060576), (4, 5295432), (6, 3530288), (8, 2647716), (12, 1765144), (16, 1323858), (17, 1245984), (24, 882572), (32, 661929), (34, 622992), (48, 441286), (51, 415328), (68, 311496), (96, 220643), (102, 207664), (136, 155748), (204, 103832), (272, 77874), (408, 51916), (544, 38937), (816, 25958), (1632, 12979)]