20437501

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2081}}^1$

素因数の和:2172

約数の個数: 16

約数和(自身を含む): 24784128

約数和(自身を除く): 4346627

約数列:

[1, 7, 23, 61, 161, 427, 1403, 2081, 9821, 14567, 47863, 126941, 335041, 888587, 2919643, 20437501]

約数ペア:

[(1, 20437501), (7, 2919643), (23, 888587), (61, 335041), (161, 126941), (427, 47863), (1403, 14567), (2081, 9821)]