81791127

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{827}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 137434752

約数和(自身を除く): 55643625

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 243, 297, 333, 407, 827, 891, 999, 1221, 2481, 2673, 2997, 3663, 7443, 8991, 9097, 10989, 22329, 27291, 30599, 32967, 66987, 81873, 91797, 98901, 200961, 245619, 275391, 336589, 736857, 826173, 1009767, 2210571, 2478519, 3029301, 7435557, 9087903, 27263709, 81791127]

約数ペア:

[(1, 81791127), (3, 27263709), (9, 9087903), (11, 7435557), (27, 3029301), (33, 2478519), (37, 2210571), (81, 1009767), (99, 826173), (111, 736857), (243, 336589), (297, 275391), (333, 245619), (407, 200961), (827, 98901), (891, 91797), (999, 81873), (1221, 66987), (2481, 32967), (2673, 30599), (2997, 27291), (3663, 22329), (7443, 10989), (8991, 9097)]