20797777

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 7587503

約数列:

[1, 7, 11, 13, 77, 79, 91, 143, 263, 553, 869, 1001, 1027, 1841, 2893, 3419, 6083, 7189, 11297, 20251, 20777, 23933, 37609, 79079, 145439, 228547, 263263, 270101, 1599829, 1890707, 2971111, 20797777]

約数ペア:

[(1, 20797777), (7, 2971111), (11, 1890707), (13, 1599829), (77, 270101), (79, 263263), (91, 228547), (143, 145439), (263, 79079), (553, 37609), (869, 23933), (1001, 20777), (1027, 20251), (1841, 11297), (2893, 7189), (3419, 6083)]