218237943

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 376307712

約数和(自身を除く): 158069769

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 127, 129, 173, 231, 301, 381, 473, 519, 889, 903, 1211, 1397, 1419, 1903, 2667, 3311, 3633, 4191, 5461, 5709, 7439, 9779, 9933, 13321, 16383, 21971, 22317, 29337, 38227, 39963, 52073, 60071, 65913, 81829, 114681, 153797, 156219, 180213, 241681, 245487, 420497, 461391, 572803, 725043, 944753, 1261491, 1691767, 1718409, 2834259, 5075301, 6613271, 10392283, 19839813, 31176849, 72745981, 218237943]

約数ペア:

[(1, 218237943), (3, 72745981), (7, 31176849), (11, 19839813), (21, 10392283), (33, 6613271), (43, 5075301), (77, 2834259), (127, 1718409), (129, 1691767), (173, 1261491), (231, 944753), (301, 725043), (381, 572803), (473, 461391), (519, 420497), (889, 245487), (903, 241681), (1211, 180213), (1397, 156219), (1419, 153797), (1903, 114681), (2667, 81829), (3311, 65913), (3633, 60071), (4191, 52073), (5461, 39963), (5709, 38227), (7439, 29337), (9779, 22317), (9933, 21971), (13321, 16383)]