21570606

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1$

素因数の和:142

約数の個数: 72

約数和(自身を含む): 51119640

約数和(自身を除く): 29549034

約数列:

[1, 2, 3, 6, 9, 18, 29, 31, 43, 58, 62, 86, 87, 93, 129, 174, 186, 258, 261, 279, 387, 522, 558, 774, 899, 961, 1247, 1333, 1798, 1922, 2494, 2666, 2697, 2883, 3741, 3999, 5394, 5766, 7482, 7998, 8091, 8649, 11223, 11997, 16182, 17298, 22446, 23994, 27869, 38657, 41323, 55738, 77314, 82646, 83607, 115971, 123969, 167214, 231942, 247938, 250821, 347913, 371907, 501642, 695826, 743814, 1198367, 2396734, 3595101, 7190202, 10785303, 21570606]

約数ペア:

[(1, 21570606), (2, 10785303), (3, 7190202), (6, 3595101), (9, 2396734), (18, 1198367), (29, 743814), (31, 695826), (43, 501642), (58, 371907), (62, 347913), (86, 250821), (87, 247938), (93, 231942), (129, 167214), (174, 123969), (186, 115971), (258, 83607), (261, 82646), (279, 77314), (387, 55738), (522, 41323), (558, 38657), (774, 27869), (899, 23994), (961, 22446), (1247, 17298), (1333, 16182), (1798, 11997), (1922, 11223), (2494, 8649), (2666, 8091), (2697, 7998), (2883, 7482), (3741, 5766), (3999, 5394)]