21647307

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{821}}^1$

素因数の和:899

約数の個数: 32

約数和(自身を含む): 34089984

約数和(自身を除く): 12442677

約数列:

[1, 3, 11, 17, 33, 47, 51, 141, 187, 517, 561, 799, 821, 1551, 2397, 2463, 8789, 9031, 13957, 26367, 27093, 38587, 41871, 115761, 153527, 424457, 460581, 655979, 1273371, 1967937, 7215769, 21647307]

約数ペア:

[(1, 21647307), (3, 7215769), (11, 1967937), (17, 1273371), (33, 655979), (47, 460581), (51, 424457), (141, 153527), (187, 115761), (517, 41871), (561, 38587), (799, 27093), (821, 26367), (1551, 13957), (2397, 9031), (2463, 8789)]