2989025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{541}}^1$

素因数の和:581

約数の個数: 24

約数和(自身を含む): 4234104

約数和(自身を除く): 1245079

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 541, 1105, 2705, 5525, 7033, 9197, 13525, 35165, 45985, 119561, 175825, 229925, 597805, 2989025]

約数ペア:

[(1, 2989025), (5, 597805), (13, 229925), (17, 175825), (25, 119561), (65, 45985), (85, 35165), (221, 13525), (325, 9197), (425, 7033), (541, 5525), (1105, 2705)]