21533661

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 11643939

約数列:

[1, 3, 9, 27, 47, 71, 141, 213, 239, 423, 639, 717, 1269, 1917, 2151, 3337, 6453, 10011, 11233, 16969, 30033, 33699, 50907, 90099, 101097, 152721, 303291, 458163, 797543, 2392629, 7177887, 21533661]

約数ペア:

[(1, 21533661), (3, 7177887), (9, 2392629), (27, 797543), (47, 458163), (71, 303291), (141, 152721), (213, 101097), (239, 90099), (423, 50907), (639, 33699), (717, 30033), (1269, 16969), (1917, 11233), (2151, 10011), (3337, 6453)]