81087831

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 138332160

約数和(自身を除く): 57244329

約数列:

[1, 3, 9, 11, 27, 33, 37, 47, 99, 111, 141, 157, 297, 333, 407, 423, 471, 517, 999, 1221, 1269, 1413, 1551, 1727, 1739, 3663, 4239, 4653, 5181, 5217, 5809, 7379, 10989, 13959, 15543, 15651, 17427, 19129, 22137, 46629, 46953, 52281, 57387, 63899, 66411, 81169, 156843, 172161, 191697, 199233, 243507, 273023, 516483, 575091, 730521, 819069, 1725273, 2191563, 2457207, 3003253, 7371621, 9009759, 27029277, 81087831]

約数ペア:

[(1, 81087831), (3, 27029277), (9, 9009759), (11, 7371621), (27, 3003253), (33, 2457207), (37, 2191563), (47, 1725273), (99, 819069), (111, 730521), (141, 575091), (157, 516483), (297, 273023), (333, 243507), (407, 199233), (423, 191697), (471, 172161), (517, 156843), (999, 81169), (1221, 66411), (1269, 63899), (1413, 57387), (1551, 52281), (1727, 46953), (1739, 46629), (3663, 22137), (4239, 19129), (4653, 17427), (5181, 15651), (5217, 15543), (5809, 13959), (7379, 10989)]