20777315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18803}}^1$

素因数の和:18838

約数の個数: 16

約数和(自身を含む): 28431648

約数和(自身を除く): 7654333

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18803, 94015, 244439, 319651, 1222195, 1598255, 4155463, 20777315]

約数ペア:

[(1, 20777315), (5, 4155463), (13, 1598255), (17, 1222195), (65, 319651), (85, 244439), (221, 94015), (1105, 18803)]