21931173

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 37267776

約数和(自身を除く): 15336603

約数列:

[1, 3, 9, 11, 17, 33, 51, 83, 99, 153, 157, 187, 249, 471, 561, 747, 913, 1411, 1413, 1683, 1727, 2669, 2739, 4233, 5181, 8007, 8217, 12699, 13031, 15521, 15543, 24021, 29359, 39093, 46563, 88077, 117279, 139689, 143341, 221527, 264231, 430023, 664581, 1290069, 1993743, 2436797, 7310391, 21931173]

約数ペア:

[(1, 21931173), (3, 7310391), (9, 2436797), (11, 1993743), (17, 1290069), (33, 664581), (51, 430023), (83, 264231), (99, 221527), (153, 143341), (157, 139689), (187, 117279), (249, 88077), (471, 46563), (561, 39093), (747, 29359), (913, 24021), (1411, 15543), (1413, 15521), (1683, 13031), (1727, 12699), (2669, 8217), (2739, 8007), (4233, 5181)]