28147925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{337}}^1$

素因数の和:617

約数の個数: 24

約数和(自身を含む): 37846536

約数和(自身を除く): 9698611

約数列:

[1, 5, 13, 25, 65, 257, 325, 337, 1285, 1685, 3341, 4381, 6425, 8425, 16705, 21905, 83525, 86609, 109525, 433045, 1125917, 2165225, 5629585, 28147925]

約数ペア:

[(1, 28147925), (5, 5629585), (13, 2165225), (25, 1125917), (65, 433045), (257, 109525), (325, 86609), (337, 83525), (1285, 21905), (1685, 16705), (3341, 8425), (4381, 6425)]