20993013

素因数分解:

$3^7\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 32668800

約数和(自身を除く): 11675787

約数列:

[1, 3, 9, 27, 29, 81, 87, 243, 261, 331, 729, 783, 993, 2187, 2349, 2979, 7047, 8937, 9599, 21141, 26811, 28797, 63423, 80433, 86391, 241299, 259173, 723897, 777519, 2332557, 6997671, 20993013]

約数ペア:

[(1, 20993013), (3, 6997671), (9, 2332557), (27, 777519), (29, 723897), (81, 259173), (87, 241299), (243, 86391), (261, 80433), (331, 63423), (729, 28797), (783, 26811), (993, 21141), (2187, 9599), (2349, 8937), (2979, 7047)]