21282291

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{797}}^1$

素因数の和:872

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 12425229

約数列:

[1, 3, 9, 23, 27, 43, 69, 129, 207, 387, 621, 797, 989, 1161, 2391, 2967, 7173, 8901, 18331, 21519, 26703, 34271, 54993, 102813, 164979, 308439, 494937, 788233, 925317, 2364699, 7094097, 21282291]

約数ペア:

[(1, 21282291), (3, 7094097), (9, 2364699), (23, 925317), (27, 788233), (43, 494937), (69, 308439), (129, 164979), (207, 102813), (387, 54993), (621, 34271), (797, 26703), (989, 21519), (1161, 18331), (2391, 8901), (2967, 7173)]