20693337

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 35020800

約数和(自身を除く): 14327463

約数列:

[1, 3, 7, 19, 21, 31, 49, 57, 93, 133, 147, 217, 239, 399, 589, 651, 717, 931, 1519, 1673, 1767, 2793, 4123, 4541, 4557, 5019, 7409, 11711, 12369, 13623, 22227, 28861, 31787, 35133, 51863, 86583, 95361, 140771, 155589, 222509, 363041, 422313, 667527, 985397, 1089123, 2956191, 6897779, 20693337]

約数ペア:

[(1, 20693337), (3, 6897779), (7, 2956191), (19, 1089123), (21, 985397), (31, 667527), (49, 422313), (57, 363041), (93, 222509), (133, 155589), (147, 140771), (217, 95361), (239, 86583), (399, 51863), (589, 35133), (651, 31787), (717, 28861), (931, 22227), (1519, 13623), (1673, 12369), (1767, 11711), (2793, 7409), (4123, 5019), (4541, 4557)]