20797959

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:160

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 15973881

約数列:

[1, 3, 7, 13, 21, 29, 37, 39, 71, 87, 91, 111, 203, 213, 259, 273, 377, 481, 497, 609, 777, 923, 1073, 1131, 1443, 1491, 2059, 2627, 2639, 2769, 3219, 3367, 6177, 6461, 7511, 7881, 7917, 10101, 13949, 14413, 18389, 19383, 22533, 26767, 34151, 41847, 43239, 55167, 76183, 80301, 97643, 102453, 187369, 228549, 239057, 292929, 533281, 562107, 717171, 990379, 1599843, 2971137, 6932653, 20797959]

約数ペア:

[(1, 20797959), (3, 6932653), (7, 2971137), (13, 1599843), (21, 990379), (29, 717171), (37, 562107), (39, 533281), (71, 292929), (87, 239057), (91, 228549), (111, 187369), (203, 102453), (213, 97643), (259, 80301), (273, 76183), (377, 55167), (481, 43239), (497, 41847), (609, 34151), (777, 26767), (923, 22533), (1073, 19383), (1131, 18389), (1443, 14413), (1491, 13949), (2059, 10101), (2627, 7917), (2639, 7881), (2769, 7511), (3219, 6461), (3367, 6177)]