21713859

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:368

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 11740221

約数列:

[1, 3, 9, 27, 47, 71, 141, 213, 241, 423, 639, 723, 1269, 1917, 2169, 3337, 6507, 10011, 11327, 17111, 30033, 33981, 51333, 90099, 101943, 153999, 305829, 461997, 804217, 2412651, 7237953, 21713859]

約数ペア:

[(1, 21713859), (3, 7237953), (9, 2412651), (27, 804217), (47, 461997), (71, 305829), (141, 153999), (213, 101943), (241, 90099), (423, 51333), (639, 33981), (723, 30033), (1269, 17111), (1917, 11327), (2169, 10011), (3337, 6507)]