19806878

素因数分解:

$2^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{2221}}^1$

素因数の和:2257

約数の個数: 32

約数和(自身を含む): 37329600

約数和(自身を除く): 17522722

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 343, 637, 686, 1274, 2221, 4442, 4459, 8918, 15547, 28873, 31094, 57746, 108829, 202111, 217658, 404222, 761803, 1414777, 1523606, 2829554, 9903439, 19806878]

約数ペア:

[(1, 19806878), (2, 9903439), (7, 2829554), (13, 1523606), (14, 1414777), (26, 761803), (49, 404222), (91, 217658), (98, 202111), (182, 108829), (343, 57746), (637, 31094), (686, 28873), (1274, 15547), (2221, 8918), (4442, 4459)]