19711868

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:458

約数の個数: 36

約数和(自身を含む): 38319960

約数和(自身を除く): 18608092

約数列:

[1, 2, 4, 11, 22, 44, 121, 139, 242, 278, 293, 484, 556, 586, 1172, 1529, 3058, 3223, 6116, 6446, 12892, 16819, 33638, 35453, 40727, 67276, 70906, 81454, 141812, 162908, 447997, 895994, 1791988, 4927967, 9855934, 19711868]

約数ペア:

[(1, 19711868), (2, 9855934), (4, 4927967), (11, 1791988), (22, 895994), (44, 447997), (121, 162908), (139, 141812), (242, 81454), (278, 70906), (293, 67276), (484, 40727), (556, 35453), (586, 33638), (1172, 16819), (1529, 12892), (3058, 6446), (3223, 6116)]