19979663

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{503}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 22934016

約数和(自身を除く): 2954353

約数列:

[1, 11, 23, 157, 253, 503, 1727, 3611, 5533, 11569, 39721, 78971, 127259, 868681, 1816333, 19979663]

約数ペア:

[(1, 19979663), (11, 1816333), (23, 868681), (157, 127259), (253, 78971), (503, 39721), (1727, 11569), (3611, 5533)]