21273813

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{863}}^1$

素因数の和:966

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13562667

約数列:

[1, 3, 9, 11, 27, 33, 83, 99, 249, 297, 747, 863, 913, 2241, 2589, 2739, 7767, 8217, 9493, 23301, 24651, 28479, 71629, 85437, 214887, 256311, 644661, 787919, 1933983, 2363757, 7091271, 21273813]

約数ペア:

[(1, 21273813), (3, 7091271), (9, 2363757), (11, 1933983), (27, 787919), (33, 644661), (83, 256311), (99, 214887), (249, 85437), (297, 71629), (747, 28479), (863, 24651), (913, 23301), (2241, 9493), (2589, 8217), (2739, 7767)]