20897268

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1289}}^1$

素因数の和:1496

約数の個数: 48

約数和(自身を含む): 56058240

約数和(自身を除く): 35160972

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 193, 386, 579, 772, 1158, 1289, 1351, 2316, 2578, 2702, 3867, 4053, 5156, 5404, 7734, 8106, 9023, 15468, 16212, 18046, 27069, 36092, 54138, 108276, 248777, 497554, 746331, 995108, 1492662, 1741439, 2985324, 3482878, 5224317, 6965756, 10448634, 20897268]

約数ペア:

[(1, 20897268), (2, 10448634), (3, 6965756), (4, 5224317), (6, 3482878), (7, 2985324), (12, 1741439), (14, 1492662), (21, 995108), (28, 746331), (42, 497554), (84, 248777), (193, 108276), (386, 54138), (579, 36092), (772, 27069), (1158, 18046), (1289, 16212), (1351, 15468), (2316, 9023), (2578, 8106), (2702, 7734), (3867, 5404), (4053, 5156)]