21540519

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{797}}^1$

素因数の和:837

約数の個数: 64

約数和(自身を含む): 42900480

約数和(自身を除く): 21359961

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 33, 39, 63, 77, 91, 99, 117, 143, 189, 231, 273, 297, 351, 429, 693, 797, 819, 1001, 1287, 2079, 2391, 2457, 3003, 3861, 5579, 7173, 8767, 9009, 10361, 16737, 21519, 26301, 27027, 31083, 50211, 61369, 72527, 78903, 93249, 113971, 150633, 184107, 217581, 236709, 279747, 341913, 552321, 652743, 797797, 1025739, 1656963, 1958229, 2393391, 3077217, 7180173, 21540519]

約数ペア:

[(1, 21540519), (3, 7180173), (7, 3077217), (9, 2393391), (11, 1958229), (13, 1656963), (21, 1025739), (27, 797797), (33, 652743), (39, 552321), (63, 341913), (77, 279747), (91, 236709), (99, 217581), (117, 184107), (143, 150633), (189, 113971), (231, 93249), (273, 78903), (297, 72527), (351, 61369), (429, 50211), (693, 31083), (797, 27027), (819, 26301), (1001, 21519), (1287, 16737), (2079, 10361), (2391, 9009), (2457, 8767), (3003, 7173), (3861, 5579)]