19189874

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{179}}^1\times {\mathrm{443}}^1$

素因数の和:646

約数の個数: 24

約数和(自身を含む): 31888080

約数和(自身を除く): 12698206

約数列:

[1, 2, 11, 22, 121, 179, 242, 358, 443, 886, 1969, 3938, 4873, 9746, 21659, 43318, 53603, 79297, 107206, 158594, 872267, 1744534, 9594937, 19189874]

約数ペア:

[(1, 19189874), (2, 9594937), (11, 1744534), (22, 872267), (121, 158594), (179, 107206), (242, 79297), (358, 53603), (443, 43318), (886, 21659), (1969, 9746), (3938, 4873)]