20009717

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 26449920

約数和(自身を除く): 6440203

約数列:

[1, 7, 13, 19, 71, 91, 133, 163, 247, 497, 923, 1141, 1349, 1729, 2119, 3097, 6461, 9443, 11573, 14833, 17537, 21679, 40261, 81011, 122759, 150449, 219887, 281827, 1053143, 1539209, 2858531, 20009717]

約数ペア:

[(1, 20009717), (7, 2858531), (13, 1539209), (19, 1053143), (71, 281827), (91, 219887), (133, 150449), (163, 122759), (247, 81011), (497, 40261), (923, 21679), (1141, 17537), (1349, 14833), (1729, 11573), (2119, 9443), (3097, 6461)]