81217521

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{719}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 147363840

約数和(自身を除く): 66146319

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 163, 231, 489, 693, 719, 1141, 1467, 1793, 2157, 3423, 5033, 5379, 6471, 7909, 10269, 12551, 15099, 16137, 23727, 37653, 45297, 55363, 71181, 112959, 117197, 166089, 351591, 498267, 820379, 1054773, 1289167, 2461137, 3867501, 7383411, 9024169, 11602503, 27072507, 81217521]

約数ペア:

[(1, 81217521), (3, 27072507), (7, 11602503), (9, 9024169), (11, 7383411), (21, 3867501), (33, 2461137), (63, 1289167), (77, 1054773), (99, 820379), (163, 498267), (231, 351591), (489, 166089), (693, 117197), (719, 112959), (1141, 71181), (1467, 55363), (1793, 45297), (2157, 37653), (3423, 23727), (5033, 16137), (5379, 15099), (6471, 12551), (7909, 10269)]