21126408

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^2\times {\mathrm{643}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 54366480

約数和(自身を除く): 33240072

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 74, 111, 148, 222, 296, 444, 643, 888, 1286, 1369, 1929, 2572, 2738, 3858, 4107, 5144, 5476, 7716, 8214, 10952, 15432, 16428, 23791, 32856, 47582, 71373, 95164, 142746, 190328, 285492, 570984, 880267, 1760534, 2640801, 3521068, 5281602, 7042136, 10563204, 21126408]

約数ペア:

[(1, 21126408), (2, 10563204), (3, 7042136), (4, 5281602), (6, 3521068), (8, 2640801), (12, 1760534), (24, 880267), (37, 570984), (74, 285492), (111, 190328), (148, 142746), (222, 95164), (296, 71373), (444, 47582), (643, 32856), (888, 23791), (1286, 16428), (1369, 15432), (1929, 10952), (2572, 8214), (2738, 7716), (3858, 5476), (4107, 5144)]