21209104

素因数分解:

$2^4\times 7^1\times {\mathrm{409}}^1\times {\mathrm{463}}^1$

素因数の和:887

約数の個数: 40

約数和(自身を含む): 47179520

約数和(自身を除く): 25970416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 409, 463, 818, 926, 1636, 1852, 2863, 3241, 3272, 3704, 5726, 6482, 6544, 7408, 11452, 12964, 22904, 25928, 45808, 51856, 189367, 378734, 757468, 1325569, 1514936, 2651138, 3029872, 5302276, 10604552, 21209104]

約数ペア:

[(1, 21209104), (2, 10604552), (4, 5302276), (7, 3029872), (8, 2651138), (14, 1514936), (16, 1325569), (28, 757468), (56, 378734), (112, 189367), (409, 51856), (463, 45808), (818, 25928), (926, 22904), (1636, 12964), (1852, 11452), (2863, 7408), (3241, 6544), (3272, 6482), (3704, 5726)]