80718687

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4909}}^1$

素因数の和:4957

約数の個数: 40

約数和(自身を含む): 142586400

約数和(自身を除く): 61867713

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1827, 2349, 4909, 5481, 14727, 16443, 34363, 44181, 103089, 132543, 142361, 309267, 397629, 427083, 927801, 996527, 1281249, 2783403, 2989581, 3843747, 8968743, 11531241, 26906229, 80718687]

約数ペア:

[(1, 80718687), (3, 26906229), (7, 11531241), (9, 8968743), (21, 3843747), (27, 2989581), (29, 2783403), (63, 1281249), (81, 996527), (87, 927801), (189, 427083), (203, 397629), (261, 309267), (567, 142361), (609, 132543), (783, 103089), (1827, 44181), (2349, 34363), (4909, 16443), (5481, 14727)]