28312641

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 52166400

約数和(自身を除く): 23853759

約数列:

[1, 3, 7, 9, 19, 21, 31, 49, 57, 63, 93, 109, 133, 147, 171, 217, 279, 327, 399, 441, 589, 651, 763, 931, 981, 1197, 1519, 1767, 1953, 2071, 2289, 2793, 3379, 4123, 4557, 5301, 5341, 6213, 6867, 8379, 10137, 12369, 13671, 14497, 16023, 18639, 23653, 28861, 30411, 37107, 43491, 48069, 64201, 70959, 86583, 101479, 130473, 165571, 192603, 212877, 259749, 304437, 449407, 496713, 577809, 913311, 1348221, 1490139, 3145849, 4044663, 9437547, 28312641]

約数ペア:

[(1, 28312641), (3, 9437547), (7, 4044663), (9, 3145849), (19, 1490139), (21, 1348221), (31, 913311), (49, 577809), (57, 496713), (63, 449407), (93, 304437), (109, 259749), (133, 212877), (147, 192603), (171, 165571), (217, 130473), (279, 101479), (327, 86583), (399, 70959), (441, 64201), (589, 48069), (651, 43491), (763, 37107), (931, 30411), (981, 28861), (1197, 23653), (1519, 18639), (1767, 16023), (1953, 14497), (2071, 13671), (2289, 12369), (2793, 10137), (3379, 8379), (4123, 6867), (4557, 6213), (5301, 5341)]