21308067

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 35582976

約数和(自身を除く): 14274909

約数列:

[1, 3, 9, 11, 31, 33, 53, 93, 99, 131, 159, 279, 341, 393, 477, 583, 1023, 1179, 1441, 1643, 1749, 3069, 4061, 4323, 4929, 5247, 6943, 12183, 12969, 14787, 18073, 20829, 36549, 44671, 54219, 62487, 76373, 134013, 162657, 215233, 229119, 402039, 645699, 687357, 1937097, 2367563, 7102689, 21308067]

約数ペア:

[(1, 21308067), (3, 7102689), (9, 2367563), (11, 1937097), (31, 687357), (33, 645699), (53, 402039), (93, 229119), (99, 215233), (131, 162657), (159, 134013), (279, 76373), (341, 62487), (393, 54219), (477, 44671), (583, 36549), (1023, 20829), (1179, 18073), (1441, 14787), (1643, 12969), (1749, 12183), (3069, 6943), (4061, 5247), (4323, 4929)]