255217823

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 332697600

約数和(自身を除く): 77479777

約数列:

[1, 7, 19, 31, 37, 49, 133, 217, 239, 259, 589, 703, 931, 1147, 1519, 1673, 1813, 4123, 4541, 4921, 7409, 8029, 8843, 11711, 21793, 28861, 31787, 34447, 51863, 56203, 61901, 140771, 152551, 168017, 222509, 274133, 363041, 433307, 985397, 1067857, 1176119, 1918931, 5208527, 6897779, 8232833, 13432517, 36459689, 255217823]

約数ペア:

[(1, 255217823), (7, 36459689), (19, 13432517), (31, 8232833), (37, 6897779), (49, 5208527), (133, 1918931), (217, 1176119), (239, 1067857), (259, 985397), (589, 433307), (703, 363041), (931, 274133), (1147, 222509), (1519, 168017), (1673, 152551), (1813, 140771), (4123, 61901), (4541, 56203), (4921, 51863), (7409, 34447), (8029, 31787), (8843, 28861), (11711, 21793)]