81841221

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{16871}}^1$

素因数の和:16902

約数の個数: 36

約数和(自身を含む): 150025824

約数和(自身を除く): 68184603

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1617, 4851, 16871, 50613, 118097, 151839, 185581, 354291, 556743, 826679, 1062873, 1299067, 1670229, 2480037, 3897201, 7440111, 9093469, 11691603, 27280407, 81841221]

約数ペア:

[(1, 81841221), (3, 27280407), (7, 11691603), (9, 9093469), (11, 7440111), (21, 3897201), (33, 2480037), (49, 1670229), (63, 1299067), (77, 1062873), (99, 826679), (147, 556743), (231, 354291), (441, 185581), (539, 151839), (693, 118097), (1617, 50613), (4851, 16871)]