20127978

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{86017}}^1$

素因数の和:86038

約数の個数: 24

約数和(自身を含む): 46965828

約数和(自身を除く): 26837850

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 86017, 172034, 258051, 516102, 774153, 1118221, 1548306, 2236442, 3354663, 6709326, 10063989, 20127978]

約数ペア:

[(1, 20127978), (2, 10063989), (3, 6709326), (6, 3354663), (9, 2236442), (13, 1548306), (18, 1118221), (26, 774153), (39, 516102), (78, 258051), (117, 172034), (234, 86017)]