19911188

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{6199}}^1$

素因数の和:6287

約数の個数: 24

約数和(自身を含む): 38539200

約数和(自身を除く): 18628012

約数列:

[1, 2, 4, 11, 22, 44, 73, 146, 292, 803, 1606, 3212, 6199, 12398, 24796, 68189, 136378, 272756, 452527, 905054, 1810108, 4977797, 9955594, 19911188]

約数ペア:

[(1, 19911188), (2, 9955594), (4, 4977797), (11, 1810108), (22, 905054), (44, 452527), (73, 272756), (146, 136378), (292, 68189), (803, 24796), (1606, 12398), (3212, 6199)]