20876548

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 48492864

約数和(自身を除く): 27616316

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 44, 46, 49, 77, 92, 98, 154, 161, 196, 253, 308, 322, 421, 506, 539, 644, 842, 1012, 1078, 1127, 1684, 1771, 2156, 2254, 2947, 3542, 4508, 4631, 5894, 7084, 9262, 9683, 11788, 12397, 18524, 19366, 20629, 24794, 32417, 38732, 41258, 49588, 64834, 67781, 82516, 106513, 129668, 135562, 213026, 226919, 271124, 426052, 453838, 474467, 745591, 907676, 948934, 1491182, 1897868, 2982364, 5219137, 10438274, 20876548]

約数ペア:

[(1, 20876548), (2, 10438274), (4, 5219137), (7, 2982364), (11, 1897868), (14, 1491182), (22, 948934), (23, 907676), (28, 745591), (44, 474467), (46, 453838), (49, 426052), (77, 271124), (92, 226919), (98, 213026), (154, 135562), (161, 129668), (196, 106513), (253, 82516), (308, 67781), (322, 64834), (421, 49588), (506, 41258), (539, 38732), (644, 32417), (842, 24794), (1012, 20629), (1078, 19366), (1127, 18524), (1684, 12397), (1771, 11788), (2156, 9683), (2254, 9262), (2947, 7084), (3542, 5894), (4508, 4631)]