890398905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{42491}}^1$

素因数の和:42637

約数の個数: 32

約数和(自身を含む): 1566425088

約数和(自身を除く): 676026183

約数列:

[1, 3, 5, 11, 15, 33, 55, 127, 165, 381, 635, 1397, 1905, 4191, 6985, 20955, 42491, 127473, 212455, 467401, 637365, 1402203, 2337005, 5396357, 7011015, 16189071, 26981785, 59359927, 80945355, 178079781, 296799635, 890398905]

約数ペア:

[(1, 890398905), (3, 296799635), (5, 178079781), (11, 80945355), (15, 59359927), (33, 26981785), (55, 16189071), (127, 7011015), (165, 5396357), (381, 2337005), (635, 1402203), (1397, 637365), (1905, 467401), (4191, 212455), (6985, 127473), (20955, 42491)]