289290025

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{439}}^1\times {\mathrm{613}}^1$

素因数の和:1105

約数の個数: 24

約数和(自身を含む): 368498240

約数和(自身を除く): 79208215

約数列:

[1, 5, 25, 43, 215, 439, 613, 1075, 2195, 3065, 10975, 15325, 18877, 26359, 94385, 131795, 269107, 471925, 658975, 1345535, 6727675, 11571601, 57858005, 289290025]

約数ペア:

[(1, 289290025), (5, 57858005), (25, 11571601), (43, 6727675), (215, 1345535), (439, 658975), (613, 471925), (1075, 269107), (2195, 131795), (3065, 94385), (10975, 26359), (15325, 18877)]