19946238

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:393

約数の個数: 64

約数和(自身を含む): 46421760

約数和(自身を除く): 26475522

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 43, 57, 78, 86, 114, 129, 247, 258, 313, 494, 559, 626, 741, 817, 939, 1118, 1482, 1634, 1677, 1878, 2451, 3354, 4069, 4902, 5947, 8138, 10621, 11894, 12207, 13459, 17841, 21242, 24414, 26918, 31863, 35682, 40377, 63726, 77311, 80754, 154622, 174967, 231933, 255721, 349934, 463866, 511442, 524901, 767163, 1049802, 1534326, 3324373, 6648746, 9973119, 19946238]

約数ペア:

[(1, 19946238), (2, 9973119), (3, 6648746), (6, 3324373), (13, 1534326), (19, 1049802), (26, 767163), (38, 524901), (39, 511442), (43, 463866), (57, 349934), (78, 255721), (86, 231933), (114, 174967), (129, 154622), (247, 80754), (258, 77311), (313, 63726), (494, 40377), (559, 35682), (626, 31863), (741, 26918), (817, 24414), (939, 21242), (1118, 17841), (1482, 13459), (1634, 12207), (1677, 11894), (1878, 10621), (2451, 8138), (3354, 5947), (4069, 4902)]