21298872

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1307}}^1$

素因数の和:1420

約数の個数: 64

約数和(自身を含む): 61528320

約数和(自身を除く): 40229448

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 97, 168, 194, 291, 388, 582, 679, 776, 1164, 1307, 1358, 2037, 2328, 2614, 2716, 3921, 4074, 5228, 5432, 7842, 8148, 9149, 10456, 15684, 16296, 18298, 27447, 31368, 36596, 54894, 73192, 109788, 126779, 219576, 253558, 380337, 507116, 760674, 887453, 1014232, 1521348, 1774906, 2662359, 3042696, 3549812, 5324718, 7099624, 10649436, 21298872]

約数ペア:

[(1, 21298872), (2, 10649436), (3, 7099624), (4, 5324718), (6, 3549812), (7, 3042696), (8, 2662359), (12, 1774906), (14, 1521348), (21, 1014232), (24, 887453), (28, 760674), (42, 507116), (56, 380337), (84, 253558), (97, 219576), (168, 126779), (194, 109788), (291, 73192), (388, 54894), (582, 36596), (679, 31368), (776, 27447), (1164, 18298), (1307, 16296), (1358, 15684), (2037, 10456), (2328, 9149), (2614, 8148), (2716, 7842), (3921, 5432), (4074, 5228)]