20787543021

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{947}}^1\times {\mathrm{9769}}^1$

素因数の和:10833

約数の個数: 32

約数和(自身を含む): 32009333760

約数和(自身を除く): 11221790739

約数列:

[1, 3, 7, 21, 107, 321, 749, 947, 2247, 2841, 6629, 9769, 19887, 29307, 68383, 101329, 205149, 303987, 709303, 1045283, 2127909, 3135849, 7316981, 9251243, 21950943, 27753729, 64758701, 194276103, 989883001, 2969649003, 6929181007, 20787543021]

約数ペア:

[(1, 20787543021), (3, 6929181007), (7, 2969649003), (21, 989883001), (107, 194276103), (321, 64758701), (749, 27753729), (947, 21950943), (2247, 9251243), (2841, 7316981), (6629, 3135849), (9769, 2127909), (19887, 1045283), (29307, 709303), (68383, 303987), (101329, 205149)]