203979985

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 285441408

約数和(自身を除く): 81461423

約数列:

[1, 5, 11, 23, 55, 107, 115, 121, 137, 253, 535, 605, 685, 1177, 1265, 1507, 2461, 2783, 3151, 5885, 7535, 12305, 12947, 13915, 14659, 15755, 16577, 27071, 34661, 64735, 73295, 82885, 135355, 161249, 173305, 297781, 337157, 381271, 806245, 1488905, 1685785, 1773739, 1906355, 3708727, 8868695, 18543635, 40795997, 203979985]

約数ペア:

[(1, 203979985), (5, 40795997), (11, 18543635), (23, 8868695), (55, 3708727), (107, 1906355), (115, 1773739), (121, 1685785), (137, 1488905), (253, 806245), (535, 381271), (605, 337157), (685, 297781), (1177, 173305), (1265, 161249), (1507, 135355), (2461, 82885), (2783, 73295), (3151, 64735), (5885, 34661), (7535, 27071), (12305, 16577), (12947, 15755), (13915, 14659)]