20293889

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1637}}^1$

素因数の和:1685

約数の個数: 24

約数和(自身を含む): 26889408

約数和(自身を除く): 6595519

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1637, 1771, 11459, 12397, 18007, 37651, 80213, 126049, 263557, 414161, 882343, 1844899, 2899127, 20293889]

約数ペア:

[(1, 20293889), (7, 2899127), (11, 1844899), (23, 882343), (49, 414161), (77, 263557), (161, 126049), (253, 80213), (539, 37651), (1127, 18007), (1637, 12397), (1771, 11459)]