20391282175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{115319}}^1$

素因数の和:115983

約数の個数: 24

約数和(自身を含む): 27626981760

約数和(自身を除く): 7235699585

約数列:

[1, 5, 11, 25, 55, 275, 643, 3215, 7073, 16075, 35365, 115319, 176825, 576595, 1268509, 2882975, 6342545, 31712725, 74150117, 370750585, 815651287, 1853752925, 4078256435, 20391282175]

約数ペア:

[(1, 20391282175), (5, 4078256435), (11, 1853752925), (25, 815651287), (55, 370750585), (275, 74150117), (643, 31712725), (3215, 6342545), (7073, 2882975), (16075, 1268509), (35365, 576595), (115319, 176825)]