20976813

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1811}}^1$

素因数の和:1847

約数の個数: 40

約数和(自身を含む): 36834336

約数和(自身を除く): 15857523

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 143, 297, 351, 429, 891, 1053, 1287, 1811, 3861, 5433, 11583, 16299, 19921, 23543, 48897, 59763, 70629, 146691, 179289, 211887, 258973, 537867, 635661, 776919, 1613601, 1906983, 2330757, 6992271, 20976813]

約数ペア:

[(1, 20976813), (3, 6992271), (9, 2330757), (11, 1906983), (13, 1613601), (27, 776919), (33, 635661), (39, 537867), (81, 258973), (99, 211887), (117, 179289), (143, 146691), (297, 70629), (351, 59763), (429, 48897), (891, 23543), (1053, 19921), (1287, 16299), (1811, 11583), (3861, 5433)]