21410259

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{751}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 33352704

約数和(自身を除く): 11942445

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 221, 559, 663, 731, 751, 1677, 2193, 2253, 9503, 9763, 12767, 28509, 29289, 32293, 38301, 96879, 165971, 419809, 497913, 548981, 1259427, 1646943, 7136753, 21410259]

約数ペア:

[(1, 21410259), (3, 7136753), (13, 1646943), (17, 1259427), (39, 548981), (43, 497913), (51, 419809), (129, 165971), (221, 96879), (559, 38301), (663, 32293), (731, 29289), (751, 28509), (1677, 12767), (2193, 9763), (2253, 9503)]