21554478

素因数分解:

$2^1\times 3^3\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{277}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 52842240

約数和(自身を除く): 31287762

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 54, 66, 99, 131, 198, 262, 277, 297, 393, 554, 594, 786, 831, 1179, 1441, 1662, 2358, 2493, 2882, 3047, 3537, 4323, 4986, 6094, 7074, 7479, 8646, 9141, 12969, 14958, 18282, 25938, 27423, 36287, 38907, 54846, 72574, 77814, 82269, 108861, 164538, 217722, 326583, 399157, 653166, 798314, 979749, 1197471, 1959498, 2394942, 3592413, 7184826, 10777239, 21554478]

約数ペア:

[(1, 21554478), (2, 10777239), (3, 7184826), (6, 3592413), (9, 2394942), (11, 1959498), (18, 1197471), (22, 979749), (27, 798314), (33, 653166), (54, 399157), (66, 326583), (99, 217722), (131, 164538), (198, 108861), (262, 82269), (277, 77814), (297, 72574), (393, 54846), (554, 38907), (594, 36287), (786, 27423), (831, 25938), (1179, 18282), (1441, 14958), (1662, 12969), (2358, 9141), (2493, 8646), (2882, 7479), (3047, 7074), (3537, 6094), (4323, 4986)]