21020912

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1439}}^1$

素因数の和:1541

約数の個数: 40

約数和(自身を含む): 44997120

約数和(自身を除く): 23976208

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 83, 88, 166, 176, 332, 664, 913, 1328, 1439, 1826, 2878, 3652, 5756, 7304, 11512, 14608, 15829, 23024, 31658, 63316, 119437, 126632, 238874, 253264, 477748, 955496, 1313807, 1910992, 2627614, 5255228, 10510456, 21020912]

約数ペア:

[(1, 21020912), (2, 10510456), (4, 5255228), (8, 2627614), (11, 1910992), (16, 1313807), (22, 955496), (44, 477748), (83, 253264), (88, 238874), (166, 126632), (176, 119437), (332, 63316), (664, 31658), (913, 23024), (1328, 15829), (1439, 14608), (1826, 11512), (2878, 7304), (3652, 5756)]