81831519

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{5623}}^1$

素因数の和:5657

約数の個数: 48

約数和(自身を含む): 153872640

約数和(自身を除く): 72041121

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 147, 189, 231, 297, 441, 539, 693, 1323, 1617, 2079, 4851, 5623, 14553, 16869, 39361, 50607, 61853, 118083, 151821, 185559, 275527, 354249, 432971, 556677, 826581, 1062747, 1298913, 1670031, 2479743, 3030797, 3896739, 7439229, 9092391, 11690217, 27277173, 81831519]

約数ペア:

[(1, 81831519), (3, 27277173), (7, 11690217), (9, 9092391), (11, 7439229), (21, 3896739), (27, 3030797), (33, 2479743), (49, 1670031), (63, 1298913), (77, 1062747), (99, 826581), (147, 556677), (189, 432971), (231, 354249), (297, 275527), (441, 185559), (539, 151821), (693, 118083), (1323, 61853), (1617, 50607), (2079, 39361), (4851, 16869), (5623, 14553)]