21370657

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1097}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 28038528

約数和(自身を除く): 6667871

約数列:

[1, 7, 11, 23, 77, 121, 161, 253, 847, 1097, 1771, 2783, 7679, 12067, 19481, 25231, 84469, 132737, 176617, 277541, 929159, 1942787, 3052951, 21370657]

約数ペア:

[(1, 21370657), (7, 3052951), (11, 1942787), (23, 929159), (77, 277541), (121, 176617), (161, 132737), (253, 84469), (847, 25231), (1097, 19481), (1771, 12067), (2783, 7679)]