17942967

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 72

約数和(自身を含む): 33078240

約数和(自身を除く): 15135273

約数列:

[1, 3, 7, 9, 21, 23, 29, 49, 61, 63, 69, 87, 147, 161, 183, 203, 207, 261, 427, 441, 483, 549, 609, 667, 1127, 1281, 1403, 1421, 1449, 1769, 1827, 2001, 2989, 3381, 3843, 4209, 4263, 4669, 5307, 6003, 8967, 9821, 10143, 12383, 12627, 12789, 14007, 15921, 26901, 29463, 32683, 37149, 40687, 42021, 68747, 86681, 88389, 98049, 111447, 122061, 206241, 260043, 284809, 294147, 366183, 618723, 780129, 854427, 1993663, 2563281, 5980989, 17942967]

約数ペア:

[(1, 17942967), (3, 5980989), (7, 2563281), (9, 1993663), (21, 854427), (23, 780129), (29, 618723), (49, 366183), (61, 294147), (63, 284809), (69, 260043), (87, 206241), (147, 122061), (161, 111447), (183, 98049), (203, 88389), (207, 86681), (261, 68747), (427, 42021), (441, 40687), (483, 37149), (549, 32683), (609, 29463), (667, 26901), (1127, 15921), (1281, 14007), (1403, 12789), (1421, 12627), (1449, 12383), (1769, 10143), (1827, 9821), (2001, 8967), (2989, 6003), (3381, 5307), (3843, 4669), (4209, 4263)]