81447525

素因数分解:

$3^6\times 5^2\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:178

約数の個数: 84

約数和(自身を含む): 156539460

約数和(自身を除く): 75091935

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 81, 109, 123, 135, 205, 225, 243, 327, 369, 405, 545, 615, 675, 729, 981, 1025, 1107, 1215, 1635, 1845, 2025, 2725, 2943, 3075, 3321, 3645, 4469, 4905, 5535, 6075, 8175, 8829, 9225, 9963, 13407, 14715, 16605, 18225, 22345, 24525, 26487, 27675, 29889, 40221, 44145, 49815, 67035, 73575, 79461, 83025, 111725, 120663, 132435, 149445, 201105, 220725, 249075, 335175, 361989, 397305, 603315, 662175, 747225, 1005525, 1085967, 1809945, 1986525, 3016575, 3257901, 5429835, 9049725, 16289505, 27149175, 81447525]

約数ペア:

[(1, 81447525), (3, 27149175), (5, 16289505), (9, 9049725), (15, 5429835), (25, 3257901), (27, 3016575), (41, 1986525), (45, 1809945), (75, 1085967), (81, 1005525), (109, 747225), (123, 662175), (135, 603315), (205, 397305), (225, 361989), (243, 335175), (327, 249075), (369, 220725), (405, 201105), (545, 149445), (615, 132435), (675, 120663), (729, 111725), (981, 83025), (1025, 79461), (1107, 73575), (1215, 67035), (1635, 49815), (1845, 44145), (2025, 40221), (2725, 29889), (2943, 27675), (3075, 26487), (3321, 24525), (3645, 22345), (4469, 18225), (4905, 16605), (5535, 14715), (6075, 13407), (8175, 9963), (8829, 9225)]