20686572081

素因数分解:

$3^2\times 7^1\times {\mathrm{1039}}^1\times {\mathrm{316033}}^1$

素因数の和:317085

約数の個数: 24

約数和(自身を含む): 34182237440

約数和(自身を除く): 13495665359

約数列:

[1, 3, 7, 9, 21, 63, 1039, 3117, 7273, 9351, 21819, 65457, 316033, 948099, 2212231, 2844297, 6636693, 19910079, 328358287, 985074861, 2298508009, 2955224583, 6895524027, 20686572081]

約数ペア:

[(1, 20686572081), (3, 6895524027), (7, 2955224583), (9, 2298508009), (21, 985074861), (63, 328358287), (1039, 19910079), (3117, 6636693), (7273, 2844297), (9351, 2212231), (21819, 948099), (65457, 316033)]