20123686115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9986941}}^1$

素因数の和:9986990

約数の個数: 16

約数和(自身を含む): 26844900096

約数和(自身を除く): 6721213981

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 9986941, 49934705, 129830233, 309595171, 649151165, 1547975855, 4024737223, 20123686115]

約数ペア:

[(1, 20123686115), (5, 4024737223), (13, 1547975855), (31, 649151165), (65, 309595171), (155, 129830233), (403, 49934705), (2015, 9986941)]