199907785

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 310915584

約数和(自身を除く): 111007799

約数列:

[1, 5, 7, 11, 35, 53, 55, 77, 97, 101, 265, 371, 385, 485, 505, 583, 679, 707, 1067, 1111, 1855, 2915, 3395, 3535, 4081, 5141, 5335, 5353, 5555, 7469, 7777, 9797, 20405, 25705, 26765, 35987, 37345, 37471, 38885, 48985, 56551, 58883, 68579, 107767, 179935, 187355, 282755, 294415, 342895, 395857, 412181, 519241, 538835, 754369, 1979285, 2060905, 2596205, 3634687, 3771845, 5711651, 18173435, 28558255, 39981557, 199907785]

約数ペア:

[(1, 199907785), (5, 39981557), (7, 28558255), (11, 18173435), (35, 5711651), (53, 3771845), (55, 3634687), (77, 2596205), (97, 2060905), (101, 1979285), (265, 754369), (371, 538835), (385, 519241), (485, 412181), (505, 395857), (583, 342895), (679, 294415), (707, 282755), (1067, 187355), (1111, 179935), (1855, 107767), (2915, 68579), (3395, 58883), (3535, 56551), (4081, 48985), (5141, 38885), (5335, 37471), (5353, 37345), (5555, 35987), (7469, 26765), (7777, 25705), (9797, 20405)]