256760945

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 390044160

約数和(自身を除く): 133283215

約数列:

[1, 5, 7, 17, 35, 37, 85, 107, 109, 119, 185, 259, 535, 545, 595, 629, 749, 763, 1295, 1819, 1853, 3145, 3745, 3815, 3959, 4033, 4403, 9095, 9265, 11663, 12733, 12971, 19795, 20165, 22015, 27713, 28231, 58315, 63665, 64855, 67303, 68561, 81641, 138565, 141155, 198271, 336515, 342805, 408205, 431531, 471121, 479927, 991355, 1387897, 2157655, 2355605, 2399635, 3020717, 6939485, 7336027, 15103585, 36680135, 51352189, 256760945]

約数ペア:

[(1, 256760945), (5, 51352189), (7, 36680135), (17, 15103585), (35, 7336027), (37, 6939485), (85, 3020717), (107, 2399635), (109, 2355605), (119, 2157655), (185, 1387897), (259, 991355), (535, 479927), (545, 471121), (595, 431531), (629, 408205), (749, 342805), (763, 336515), (1295, 198271), (1819, 141155), (1853, 138565), (3145, 81641), (3745, 68561), (3815, 67303), (3959, 64855), (4033, 63665), (4403, 58315), (9095, 28231), (9265, 27713), (11663, 22015), (12733, 20165), (12971, 19795)]