28991358

素因数分解:

$2^1\times 3^5\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:85

約数の個数: 144

約数和(自身を含む): 78427440

約数和(自身を除く): 49436082

約数列:

[1, 2, 3, 6, 9, 11, 17, 18, 22, 27, 29, 33, 34, 51, 54, 58, 66, 81, 87, 99, 102, 121, 153, 162, 174, 187, 198, 242, 243, 261, 297, 306, 319, 363, 374, 459, 486, 493, 522, 561, 594, 638, 726, 783, 891, 918, 957, 986, 1089, 1122, 1377, 1479, 1566, 1683, 1782, 1914, 2057, 2178, 2349, 2673, 2754, 2871, 2958, 3267, 3366, 3509, 4114, 4131, 4437, 4698, 5049, 5346, 5423, 5742, 6171, 6534, 7018, 7047, 8262, 8613, 8874, 9801, 10098, 10527, 10846, 12342, 13311, 14094, 15147, 16269, 17226, 18513, 19602, 21054, 25839, 26622, 29403, 30294, 31581, 32538, 37026, 39933, 45441, 48807, 51678, 55539, 58806, 59653, 63162, 77517, 79866, 90882, 94743, 97614, 111078, 119306, 119799, 146421, 155034, 166617, 178959, 189486, 239598, 284229, 292842, 333234, 357918, 439263, 499851, 536877, 568458, 852687, 878526, 999702, 1073754, 1317789, 1610631, 1705374, 2635578, 3221262, 4831893, 9663786, 14495679, 28991358]

約数ペア:

[(1, 28991358), (2, 14495679), (3, 9663786), (6, 4831893), (9, 3221262), (11, 2635578), (17, 1705374), (18, 1610631), (22, 1317789), (27, 1073754), (29, 999702), (33, 878526), (34, 852687), (51, 568458), (54, 536877), (58, 499851), (66, 439263), (81, 357918), (87, 333234), (99, 292842), (102, 284229), (121, 239598), (153, 189486), (162, 178959), (174, 166617), (187, 155034), (198, 146421), (242, 119799), (243, 119306), (261, 111078), (297, 97614), (306, 94743), (319, 90882), (363, 79866), (374, 77517), (459, 63162), (486, 59653), (493, 58806), (522, 55539), (561, 51678), (594, 48807), (638, 45441), (726, 39933), (783, 37026), (891, 32538), (918, 31581), (957, 30294), (986, 29403), (1089, 26622), (1122, 25839), (1377, 21054), (1479, 19602), (1566, 18513), (1683, 17226), (1782, 16269), (1914, 15147), (2057, 14094), (2178, 13311), (2349, 12342), (2673, 10846), (2754, 10527), (2871, 10098), (2958, 9801), (3267, 8874), (3366, 8613), (3509, 8262), (4114, 7047), (4131, 7018), (4437, 6534), (4698, 6171), (5049, 5742), (5346, 5423)]