21683760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12907}}^1$

素因数の和:12930

約数の個数: 80

約数和(自身を含む): 76828416

約数和(自身を除く): 55144656

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12907, 25814, 38721, 51628, 64535, 77442, 90349, 103256, 129070, 154884, 180698, 193605, 206512, 258140, 271047, 309768, 361396, 387210, 451745, 516280, 542094, 619536, 722792, 774420, 903490, 1032560, 1084188, 1355235, 1445584, 1548840, 1806980, 2168376, 2710470, 3097680, 3613960, 4336752, 5420940, 7227920, 10841880, 21683760]

約数ペア:

[(1, 21683760), (2, 10841880), (3, 7227920), (4, 5420940), (5, 4336752), (6, 3613960), (7, 3097680), (8, 2710470), (10, 2168376), (12, 1806980), (14, 1548840), (15, 1445584), (16, 1355235), (20, 1084188), (21, 1032560), (24, 903490), (28, 774420), (30, 722792), (35, 619536), (40, 542094), (42, 516280), (48, 451745), (56, 387210), (60, 361396), (70, 309768), (80, 271047), (84, 258140), (105, 206512), (112, 193605), (120, 180698), (140, 154884), (168, 129070), (210, 103256), (240, 90349), (280, 77442), (336, 64535), (420, 51628), (560, 38721), (840, 25814), (1680, 12907)]