81801279

素因数分解:

$3^3\times 7^1\times {\mathrm{443}}^1\times {\mathrm{977}}^1$

素因数の和:1436

約数の個数: 32

約数和(自身を含む): 138954240

約数和(自身を除く): 57152961

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 443, 977, 1329, 2931, 3101, 3987, 6839, 8793, 9303, 11961, 20517, 26379, 27909, 61551, 83727, 184653, 432811, 1298433, 3029677, 3895299, 9089031, 11685897, 27267093, 81801279]

約数ペア:

[(1, 81801279), (3, 27267093), (7, 11685897), (9, 9089031), (21, 3895299), (27, 3029677), (63, 1298433), (189, 432811), (443, 184653), (977, 83727), (1329, 61551), (2931, 27909), (3101, 26379), (3987, 20517), (6839, 11961), (8793, 9303)]