18999771

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{283}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 30535680

約数和(自身を除く): 11535909

約数列:

[1, 3, 7, 21, 23, 69, 139, 161, 283, 417, 483, 849, 973, 1981, 2919, 3197, 5943, 6509, 9591, 19527, 22379, 39337, 45563, 67137, 118011, 136689, 275359, 826077, 904751, 2714253, 6333257, 18999771]

約数ペア:

[(1, 18999771), (3, 6333257), (7, 2714253), (21, 904751), (23, 826077), (69, 275359), (139, 136689), (161, 118011), (283, 67137), (417, 45563), (483, 39337), (849, 22379), (973, 19527), (1981, 9591), (2919, 6509), (3197, 5943)]