21985599

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{1301}}^1$

素因数の和:1478

約数の個数: 16

約数和(自身を含む): 30248064

約数和(自身を除く): 8262465

約数列:

[1, 3, 43, 129, 131, 393, 1301, 3903, 5633, 16899, 55943, 167829, 170431, 511293, 7328533, 21985599]

約数ペア:

[(1, 21985599), (3, 7328533), (43, 511293), (129, 170431), (131, 167829), (393, 55943), (1301, 16899), (3903, 5633)]