20870795

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{2417}}^1$

素因数の和:2590

約数の個数: 16

約数和(自身を含む): 27507168

約数和(自身を除く): 6636373

約数列:

[1, 5, 11, 55, 157, 785, 1727, 2417, 8635, 12085, 26587, 132935, 379469, 1897345, 4174159, 20870795]

約数ペア:

[(1, 20870795), (5, 4174159), (11, 1897345), (55, 379469), (157, 132935), (785, 26587), (1727, 12085), (2417, 8635)]