21429828

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{277}}^1\times {\mathrm{307}}^1$

素因数の和:601

約数の個数: 72

約数和(自身を含む): 62334272

約数和(自身を除く): 40904444

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 277, 307, 554, 614, 831, 921, 1108, 1228, 1662, 1842, 1939, 2149, 2493, 2763, 3324, 3684, 3878, 4298, 4986, 5526, 5817, 6447, 7756, 8596, 9972, 11052, 11634, 12894, 17451, 19341, 23268, 25788, 34902, 38682, 69804, 77364, 85039, 170078, 255117, 340156, 510234, 595273, 765351, 1020468, 1190546, 1530702, 1785819, 2381092, 3061404, 3571638, 5357457, 7143276, 10714914, 21429828]

約数ペア:

[(1, 21429828), (2, 10714914), (3, 7143276), (4, 5357457), (6, 3571638), (7, 3061404), (9, 2381092), (12, 1785819), (14, 1530702), (18, 1190546), (21, 1020468), (28, 765351), (36, 595273), (42, 510234), (63, 340156), (84, 255117), (126, 170078), (252, 85039), (277, 77364), (307, 69804), (554, 38682), (614, 34902), (831, 25788), (921, 23268), (1108, 19341), (1228, 17451), (1662, 12894), (1842, 11634), (1939, 11052), (2149, 9972), (2493, 8596), (2763, 7756), (3324, 6447), (3684, 5817), (3878, 5526), (4298, 4986)]