20977593

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1787}}^1$

素因数の和:1853

約数の個数: 32

約数和(自身を含む): 35245056

約数和(自身を除く): 14267463

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 1787, 3913, 5361, 11739, 12509, 23231, 37527, 69693, 76841, 162617, 230523, 487851, 537887, 998933, 1613661, 2996799, 6992531, 20977593]

約数ペア:

[(1, 20977593), (3, 6992531), (7, 2996799), (13, 1613661), (21, 998933), (39, 537887), (43, 487851), (91, 230523), (129, 162617), (273, 76841), (301, 69693), (559, 37527), (903, 23231), (1677, 12509), (1787, 11739), (3913, 5361)]