209391507

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:565

約数の個数: 48

約数和(自身を含む): 339794400

約数和(自身を除く): 130402893

約数列:

[1, 3, 9, 13, 27, 39, 109, 117, 169, 327, 351, 421, 507, 981, 1263, 1417, 1521, 2943, 3789, 4251, 4563, 5473, 11367, 12753, 16419, 18421, 38259, 45889, 49257, 55263, 71149, 137667, 147771, 165789, 213447, 413001, 497367, 596557, 640341, 1239003, 1789671, 1921023, 5369013, 7755241, 16107039, 23265723, 69797169, 209391507]

約数ペア:

[(1, 209391507), (3, 69797169), (9, 23265723), (13, 16107039), (27, 7755241), (39, 5369013), (109, 1921023), (117, 1789671), (169, 1239003), (327, 640341), (351, 596557), (421, 497367), (507, 413001), (981, 213447), (1263, 165789), (1417, 147771), (1521, 137667), (2943, 71149), (3789, 55263), (4251, 49257), (4563, 45889), (5473, 38259), (11367, 18421), (12753, 16419)]