21347128

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 25308872

約数列:

[1, 2, 4, 8, 11, 22, 23, 44, 46, 53, 88, 92, 106, 184, 199, 212, 253, 398, 424, 506, 583, 796, 1012, 1166, 1219, 1592, 2024, 2189, 2332, 2438, 4378, 4577, 4664, 4876, 8756, 9154, 9752, 10547, 13409, 17512, 18308, 21094, 26818, 36616, 42188, 50347, 53636, 84376, 100694, 107272, 116017, 201388, 232034, 242581, 402776, 464068, 485162, 928136, 970324, 1940648, 2668391, 5336782, 10673564, 21347128]

約数ペア:

[(1, 21347128), (2, 10673564), (4, 5336782), (8, 2668391), (11, 1940648), (22, 970324), (23, 928136), (44, 485162), (46, 464068), (53, 402776), (88, 242581), (92, 232034), (106, 201388), (184, 116017), (199, 107272), (212, 100694), (253, 84376), (398, 53636), (424, 50347), (506, 42188), (583, 36616), (796, 26818), (1012, 21094), (1166, 18308), (1219, 17512), (1592, 13409), (2024, 10547), (2189, 9752), (2332, 9154), (2438, 8756), (4378, 4876), (4577, 4664)]