20355207

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{1879}}^1$

素因数の和:2062

約数の個数: 16

約数和(自身を含む): 28515840

約数和(自身を除く): 8160633

約数列:

[1, 3, 23, 69, 157, 471, 1879, 3611, 5637, 10833, 43217, 129651, 295003, 885009, 6785069, 20355207]

約数ペア:

[(1, 20355207), (3, 6785069), (23, 885009), (69, 295003), (157, 129651), (471, 43217), (1879, 10833), (3611, 5637)]