21280833

素因数分解:

$3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1033}}^1$

素因数の和:1158

約数の個数: 32

約数和(自身を含む): 36396800

約数和(自身を除く): 15115967

約数列:

[1, 3, 7, 9, 21, 27, 63, 109, 189, 327, 763, 981, 1033, 2289, 2943, 3099, 6867, 7231, 9297, 20601, 21693, 27891, 65079, 112597, 195237, 337791, 788179, 1013373, 2364537, 3040119, 7093611, 21280833]

約数ペア:

[(1, 21280833), (3, 7093611), (7, 3040119), (9, 2364537), (21, 1013373), (27, 788179), (63, 337791), (109, 195237), (189, 112597), (327, 65079), (763, 27891), (981, 21693), (1033, 20601), (2289, 9297), (2943, 7231), (3099, 6867)]