1256409

素因数分解:

$3^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1$

素因数の和:75

約数の個数: 48

約数和(自身を含む): 2371200

約数和(自身を除く): 1114791

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 49, 63, 77, 99, 111, 147, 231, 259, 333, 343, 407, 441, 539, 693, 777, 1029, 1221, 1617, 1813, 2331, 2849, 3087, 3663, 3773, 4851, 5439, 8547, 11319, 12691, 16317, 19943, 25641, 33957, 38073, 59829, 114219, 139601, 179487, 418803, 1256409]

約数ペア:

[(1, 1256409), (3, 418803), (7, 179487), (9, 139601), (11, 114219), (21, 59829), (33, 38073), (37, 33957), (49, 25641), (63, 19943), (77, 16317), (99, 12691), (111, 11319), (147, 8547), (231, 5439), (259, 4851), (333, 3773), (343, 3663), (407, 3087), (441, 2849), (539, 2331), (693, 1813), (777, 1617), (1029, 1221)]