18765278

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{9643}}^1$

素因数の和:9791

約数の個数: 16

約数和(自身を含む): 32403840

約数和(自身を除く): 13638562

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 9643, 19286, 67501, 135002, 1340377, 2680754, 9382639, 18765278]

約数ペア:

[(1, 18765278), (2, 9382639), (7, 2680754), (14, 1340377), (139, 135002), (278, 67501), (973, 19286), (1946, 9643)]