20665458

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:168

約数の個数: 96

約数和(自身を含む): 52228800

約数和(自身を除く): 31563342

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 29, 33, 58, 59, 61, 66, 87, 99, 118, 122, 174, 177, 183, 198, 261, 319, 354, 366, 522, 531, 549, 638, 649, 671, 957, 1062, 1098, 1298, 1342, 1711, 1769, 1914, 1947, 2013, 2871, 3422, 3538, 3599, 3894, 4026, 5133, 5307, 5742, 5841, 6039, 7198, 10266, 10614, 10797, 11682, 12078, 15399, 15921, 18821, 19459, 21594, 30798, 31842, 32391, 37642, 38918, 39589, 56463, 58377, 64782, 79178, 104371, 112926, 116754, 118767, 169389, 175131, 208742, 237534, 313113, 338778, 350262, 356301, 626226, 712602, 939339, 1148081, 1878678, 2296162, 3444243, 6888486, 10332729, 20665458]

約数ペア:

[(1, 20665458), (2, 10332729), (3, 6888486), (6, 3444243), (9, 2296162), (11, 1878678), (18, 1148081), (22, 939339), (29, 712602), (33, 626226), (58, 356301), (59, 350262), (61, 338778), (66, 313113), (87, 237534), (99, 208742), (118, 175131), (122, 169389), (174, 118767), (177, 116754), (183, 112926), (198, 104371), (261, 79178), (319, 64782), (354, 58377), (366, 56463), (522, 39589), (531, 38918), (549, 37642), (638, 32391), (649, 31842), (671, 30798), (957, 21594), (1062, 19459), (1098, 18821), (1298, 15921), (1342, 15399), (1711, 12078), (1769, 11682), (1914, 10797), (1947, 10614), (2013, 10266), (2871, 7198), (3422, 6039), (3538, 5841), (3599, 5742), (3894, 5307), (4026, 5133)]