31721272

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 67858560

約数和(自身を除く): 36137288

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 83, 86, 88, 101, 166, 172, 202, 332, 344, 404, 473, 664, 808, 913, 946, 1111, 1826, 1892, 2222, 3569, 3652, 3784, 4343, 4444, 7138, 7304, 8383, 8686, 8888, 14276, 16766, 17372, 28552, 33532, 34744, 39259, 47773, 67064, 78518, 92213, 95546, 157036, 184426, 191092, 314072, 360469, 368852, 382184, 720938, 737704, 1441876, 2883752, 3965159, 7930318, 15860636, 31721272]

約数ペア:

[(1, 31721272), (2, 15860636), (4, 7930318), (8, 3965159), (11, 2883752), (22, 1441876), (43, 737704), (44, 720938), (83, 382184), (86, 368852), (88, 360469), (101, 314072), (166, 191092), (172, 184426), (202, 157036), (332, 95546), (344, 92213), (404, 78518), (473, 67064), (664, 47773), (808, 39259), (913, 34744), (946, 33532), (1111, 28552), (1826, 17372), (1892, 16766), (2222, 14276), (3569, 8888), (3652, 8686), (3784, 8383), (4343, 7304), (4444, 7138)]