20651449

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{991}}^1$

素因数の和:1240

約数の個数: 16

約数和(自身を含む): 25553920

約数和(自身を除く): 4902471

約数列:

[1, 7, 13, 91, 229, 991, 1603, 2977, 6937, 12883, 20839, 90181, 226939, 1588573, 2950207, 20651449]

約数ペア:

[(1, 20651449), (7, 2950207), (13, 1588573), (91, 226939), (229, 90181), (991, 20839), (1603, 12883), (2977, 6937)]