678754518

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{19913}}^1$

素因数の和:19973

約数の個数: 64

約数和(自身を含む): 1605864960

約数和(自身を除く): 927110442

約数列:

[1, 2, 3, 6, 13, 19, 23, 26, 38, 39, 46, 57, 69, 78, 114, 138, 247, 299, 437, 494, 598, 741, 874, 897, 1311, 1482, 1794, 2622, 5681, 11362, 17043, 19913, 34086, 39826, 59739, 119478, 258869, 378347, 457999, 517738, 756694, 776607, 915998, 1135041, 1373997, 1553214, 2270082, 2747994, 4918511, 5953987, 8701981, 9837022, 11907974, 14755533, 17403962, 17861961, 26105943, 29511066, 35723922, 52211886, 113125753, 226251506, 339377259, 678754518]

約数ペア:

[(1, 678754518), (2, 339377259), (3, 226251506), (6, 113125753), (13, 52211886), (19, 35723922), (23, 29511066), (26, 26105943), (38, 17861961), (39, 17403962), (46, 14755533), (57, 11907974), (69, 9837022), (78, 8701981), (114, 5953987), (138, 4918511), (247, 2747994), (299, 2270082), (437, 1553214), (494, 1373997), (598, 1135041), (741, 915998), (874, 776607), (897, 756694), (1311, 517738), (1482, 457999), (1794, 378347), (2622, 258869), (5681, 119478), (11362, 59739), (17043, 39826), (19913, 34086)]