20709913

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1\times {\mathrm{419}}^1$

素因数の和:756

約数の個数: 16

約数和(自身を含む): 24837120

約数和(自身を除く): 4127207

約数列:

[1, 7, 23, 161, 307, 419, 2149, 2933, 7061, 9637, 49427, 67459, 128633, 900431, 2958559, 20709913]

約数ペア:

[(1, 20709913), (7, 2958559), (23, 900431), (161, 128633), (307, 67459), (419, 49427), (2149, 9637), (2933, 7061)]