1287325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1$

素因数の和:273

約数の個数: 24

約数和(自身を含む): 1828008

約数和(自身を除く): 540683

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 233, 325, 425, 1105, 1165, 3029, 3961, 5525, 5825, 15145, 19805, 51493, 75725, 99025, 257465, 1287325]

約数ペア:

[(1, 1287325), (5, 257465), (13, 99025), (17, 75725), (25, 51493), (65, 19805), (85, 15145), (221, 5825), (233, 5525), (325, 3961), (425, 3029), (1105, 1165)]