20787767

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1093}}^1$

素因数の和:1143

約数の個数: 32

約数和(自身を含む): 29406720

約数和(自身を除く): 8618953

約数列:

[1, 7, 11, 13, 19, 77, 91, 133, 143, 209, 247, 1001, 1093, 1463, 1729, 2717, 7651, 12023, 14209, 19019, 20767, 84161, 99463, 145369, 156299, 228437, 269971, 1094093, 1599059, 1889797, 2969681, 20787767]

約数ペア:

[(1, 20787767), (7, 2969681), (11, 1889797), (13, 1599059), (19, 1094093), (77, 269971), (91, 228437), (133, 156299), (143, 145369), (209, 99463), (247, 84161), (1001, 20767), (1093, 19019), (1463, 14209), (1729, 12023), (2717, 7651)]