21249396

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:150

約数の個数: 144

約数和(自身を含む): 65729664

約数和(自身を除く): 44480268

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 37, 42, 43, 53, 63, 74, 84, 86, 106, 111, 126, 129, 148, 159, 172, 212, 222, 252, 258, 259, 301, 318, 333, 371, 387, 444, 477, 516, 518, 602, 636, 666, 742, 774, 777, 903, 954, 1036, 1113, 1204, 1332, 1484, 1548, 1554, 1591, 1806, 1908, 1961, 2226, 2279, 2331, 2709, 3108, 3182, 3339, 3612, 3922, 4452, 4558, 4662, 4773, 5418, 5883, 6364, 6678, 6837, 7844, 9116, 9324, 9546, 10836, 11137, 11766, 13356, 13674, 13727, 14319, 15953, 17649, 19092, 20511, 22274, 23532, 27348, 27454, 28638, 31906, 33411, 35298, 41022, 41181, 44548, 47859, 54908, 57276, 63812, 66822, 70596, 82044, 82362, 84323, 95718, 100233, 123543, 133644, 143577, 164724, 168646, 191436, 200466, 247086, 252969, 287154, 337292, 400932, 494172, 505938, 574308, 590261, 758907, 1011876, 1180522, 1517814, 1770783, 2361044, 3035628, 3541566, 5312349, 7083132, 10624698, 21249396]

約数ペア:

[(1, 21249396), (2, 10624698), (3, 7083132), (4, 5312349), (6, 3541566), (7, 3035628), (9, 2361044), (12, 1770783), (14, 1517814), (18, 1180522), (21, 1011876), (28, 758907), (36, 590261), (37, 574308), (42, 505938), (43, 494172), (53, 400932), (63, 337292), (74, 287154), (84, 252969), (86, 247086), (106, 200466), (111, 191436), (126, 168646), (129, 164724), (148, 143577), (159, 133644), (172, 123543), (212, 100233), (222, 95718), (252, 84323), (258, 82362), (259, 82044), (301, 70596), (318, 66822), (333, 63812), (371, 57276), (387, 54908), (444, 47859), (477, 44548), (516, 41181), (518, 41022), (602, 35298), (636, 33411), (666, 31906), (742, 28638), (774, 27454), (777, 27348), (903, 23532), (954, 22274), (1036, 20511), (1113, 19092), (1204, 17649), (1332, 15953), (1484, 14319), (1548, 13727), (1554, 13674), (1591, 13356), (1806, 11766), (1908, 11137), (1961, 10836), (2226, 9546), (2279, 9324), (2331, 9116), (2709, 7844), (3108, 6837), (3182, 6678), (3339, 6364), (3612, 5883), (3922, 5418), (4452, 4773), (4558, 4662)]