20351427

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1997}}^1$

素因数の和:2122

約数の個数: 16

約数和(自身を含む): 28131840

約数和(自身を除く): 7780413

約数列:

[1, 3, 43, 79, 129, 237, 1997, 3397, 5991, 10191, 85871, 157763, 257613, 473289, 6783809, 20351427]

約数ペア:

[(1, 20351427), (3, 6783809), (43, 473289), (79, 257613), (129, 157763), (237, 85871), (1997, 10191), (3397, 5991)]