38721221

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:262

約数の個数: 36

約数和(自身を含む): 52120800

約数和(自身を除く): 13399579

約数列:

[1, 7, 11, 19, 49, 77, 133, 199, 209, 361, 539, 931, 1393, 1463, 2189, 2527, 3781, 3971, 9751, 10241, 15323, 17689, 26467, 27797, 41591, 71839, 107261, 185269, 194579, 291137, 502873, 790229, 2037959, 3520111, 5531603, 38721221]

約数ペア:

[(1, 38721221), (7, 5531603), (11, 3520111), (19, 2037959), (49, 790229), (77, 502873), (133, 291137), (199, 194579), (209, 185269), (361, 107261), (539, 71839), (931, 41591), (1393, 27797), (1463, 26467), (2189, 17689), (2527, 15323), (3781, 10241), (3971, 9751)]