81812997

素因数分解:

$3^5\times 7^2\times {\mathrm{6871}}^1$

素因数の和:6900

約数の個数: 36

約数和(自身を含む): 142580256

約数和(自身を除く): 60767259

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1701, 3969, 6871, 11907, 20613, 48097, 61839, 144291, 185517, 336679, 432873, 556551, 1010037, 1298619, 1669653, 3030111, 3895857, 9090333, 11687571, 27270999, 81812997]

約数ペア:

[(1, 81812997), (3, 27270999), (7, 11687571), (9, 9090333), (21, 3895857), (27, 3030111), (49, 1669653), (63, 1298619), (81, 1010037), (147, 556551), (189, 432873), (243, 336679), (441, 185517), (567, 144291), (1323, 61839), (1701, 48097), (3969, 20613), (6871, 11907)]