21707368

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 44484300

約数和(自身を除く): 22776932

約数列:

[1, 2, 4, 8, 17, 34, 41, 68, 82, 136, 164, 229, 289, 328, 458, 578, 697, 916, 1156, 1394, 1832, 2312, 2788, 3893, 5576, 7786, 9389, 11849, 15572, 18778, 23698, 31144, 37556, 47396, 66181, 75112, 94792, 132362, 159613, 264724, 319226, 529448, 638452, 1276904, 2713421, 5426842, 10853684, 21707368]

約数ペア:

[(1, 21707368), (2, 10853684), (4, 5426842), (8, 2713421), (17, 1276904), (34, 638452), (41, 529448), (68, 319226), (82, 264724), (136, 159613), (164, 132362), (229, 94792), (289, 75112), (328, 66181), (458, 47396), (578, 37556), (697, 31144), (916, 23698), (1156, 18778), (1394, 15572), (1832, 11849), (2312, 9389), (2788, 7786), (3893, 5576)]