20129890203

素因数分解:

$3^4\times {\mathrm{181}}^1\times {\mathrm{811}}^1\times {\mathrm{1693}}^1$

素因数の和:2697

約数の個数: 40

約数和(自身を含む): 30291877616

約数和(自身を除く): 10161987413

約数列:

[1, 3, 9, 27, 81, 181, 543, 811, 1629, 1693, 2433, 4887, 5079, 7299, 14661, 15237, 21897, 45711, 65691, 137133, 146791, 306433, 440373, 919299, 1321119, 1373023, 2757897, 3963357, 4119069, 8273691, 11890071, 12357207, 24821073, 37071621, 111214863, 248517163, 745551489, 2236654467, 6709963401, 20129890203]

約数ペア:

[(1, 20129890203), (3, 6709963401), (9, 2236654467), (27, 745551489), (81, 248517163), (181, 111214863), (543, 37071621), (811, 24821073), (1629, 12357207), (1693, 11890071), (2433, 8273691), (4887, 4119069), (5079, 3963357), (7299, 2757897), (14661, 1373023), (15237, 1321119), (21897, 919299), (45711, 440373), (65691, 306433), (137133, 146791)]