28138671

素因数分解:

$3^6\times {\mathrm{11}}^3\times {\mathrm{29}}^1$

素因数の和:80

約数の個数: 56

約数和(自身を含む): 48004560

約数和(自身を除く): 19865889

約数列:

[1, 3, 9, 11, 27, 29, 33, 81, 87, 99, 121, 243, 261, 297, 319, 363, 729, 783, 891, 957, 1089, 1331, 2349, 2673, 2871, 3267, 3509, 3993, 7047, 8019, 8613, 9801, 10527, 11979, 21141, 25839, 29403, 31581, 35937, 38599, 77517, 88209, 94743, 107811, 115797, 232551, 284229, 323433, 347391, 852687, 970299, 1042173, 2558061, 3126519, 9379557, 28138671]

約数ペア:

[(1, 28138671), (3, 9379557), (9, 3126519), (11, 2558061), (27, 1042173), (29, 970299), (33, 852687), (81, 347391), (87, 323433), (99, 284229), (121, 232551), (243, 115797), (261, 107811), (297, 94743), (319, 88209), (363, 77517), (729, 38599), (783, 35937), (891, 31581), (957, 29403), (1089, 25839), (1331, 21141), (2349, 11979), (2673, 10527), (2871, 9801), (3267, 8613), (3509, 8019), (3993, 7047)]