19664631

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 36386064

約数和(自身を除く): 16721433

約数列:

[1, 3, 7, 9, 17, 21, 43, 49, 51, 61, 63, 119, 129, 147, 153, 183, 301, 357, 387, 427, 441, 549, 731, 833, 903, 1037, 1071, 1281, 2107, 2193, 2499, 2623, 2709, 2989, 3111, 3843, 5117, 6321, 6579, 7259, 7497, 7869, 8967, 9333, 15351, 18361, 18963, 21777, 23607, 26901, 35819, 44591, 46053, 50813, 55083, 65331, 107457, 128527, 133773, 152439, 165249, 312137, 322371, 385581, 401319, 457317, 936411, 1156743, 2184959, 2809233, 6554877, 19664631]

約数ペア:

[(1, 19664631), (3, 6554877), (7, 2809233), (9, 2184959), (17, 1156743), (21, 936411), (43, 457317), (49, 401319), (51, 385581), (61, 322371), (63, 312137), (119, 165249), (129, 152439), (147, 133773), (153, 128527), (183, 107457), (301, 65331), (357, 55083), (387, 50813), (427, 46053), (441, 44591), (549, 35819), (731, 26901), (833, 23607), (903, 21777), (1037, 18963), (1071, 18361), (1281, 15351), (2107, 9333), (2193, 8967), (2499, 7869), (2623, 7497), (2709, 7259), (2989, 6579), (3111, 6321), (3843, 5117)]