81239571

素因数分解:

$3^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{5441}}^1$

素因数の和:5536

約数の個数: 32

約数和(自身を含む): 139315200

約数和(自身を除く): 58075629

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 189, 237, 553, 711, 1659, 2133, 4977, 5441, 14931, 16323, 38087, 48969, 114261, 146907, 342783, 429839, 1028349, 1289517, 3008873, 3868551, 9026619, 11605653, 27079857, 81239571]

約数ペア:

[(1, 81239571), (3, 27079857), (7, 11605653), (9, 9026619), (21, 3868551), (27, 3008873), (63, 1289517), (79, 1028349), (189, 429839), (237, 342783), (553, 146907), (711, 114261), (1659, 48969), (2133, 38087), (4977, 16323), (5441, 14931)]