21171375

素因数分解:

$3^5\times 5^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:88

約数の個数: 96

約数和(自身を含む): 42928704

約数和(自身を除く): 21757329

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 41, 45, 51, 75, 81, 85, 123, 125, 135, 153, 205, 225, 243, 255, 369, 375, 405, 425, 459, 615, 675, 697, 765, 1025, 1107, 1125, 1215, 1275, 1377, 1845, 2025, 2091, 2125, 2295, 3075, 3321, 3375, 3485, 3825, 4131, 5125, 5535, 6075, 6273, 6375, 6885, 9225, 9963, 10125, 10455, 11475, 15375, 16605, 17425, 18819, 19125, 20655, 27675, 30375, 31365, 34425, 46125, 49815, 52275, 56457, 57375, 83025, 87125, 94095, 103275, 138375, 156825, 169371, 172125, 249075, 261375, 282285, 415125, 470475, 516375, 784125, 846855, 1245375, 1411425, 2352375, 4234275, 7057125, 21171375]

約数ペア:

[(1, 21171375), (3, 7057125), (5, 4234275), (9, 2352375), (15, 1411425), (17, 1245375), (25, 846855), (27, 784125), (41, 516375), (45, 470475), (51, 415125), (75, 282285), (81, 261375), (85, 249075), (123, 172125), (125, 169371), (135, 156825), (153, 138375), (205, 103275), (225, 94095), (243, 87125), (255, 83025), (369, 57375), (375, 56457), (405, 52275), (425, 49815), (459, 46125), (615, 34425), (675, 31365), (697, 30375), (765, 27675), (1025, 20655), (1107, 19125), (1125, 18819), (1215, 17425), (1275, 16605), (1377, 15375), (1845, 11475), (2025, 10455), (2091, 10125), (2125, 9963), (2295, 9225), (3075, 6885), (3321, 6375), (3375, 6273), (3485, 6075), (3825, 5535), (4131, 5125)]