20542249

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^2$

素因数の和:257

約数の個数: 24

約数和(自身を含む): 26859840

約数和(自身を除く): 6317591

約数列:

[1, 7, 13, 19, 91, 109, 133, 247, 763, 1417, 1729, 2071, 9919, 11881, 14497, 26923, 83167, 154453, 188461, 225739, 1081171, 1580173, 2934607, 20542249]

約数ペア:

[(1, 20542249), (7, 2934607), (13, 1580173), (19, 1081171), (91, 225739), (109, 188461), (133, 154453), (247, 83167), (763, 26923), (1417, 14497), (1729, 11881), (2071, 9919)]