27642765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2521}}^1$

素因数の和:2589

約数の個数: 32

約数和(自身を含む): 47938176

約数和(自身を除く): 20295411

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 2193, 2521, 3655, 7563, 10965, 12605, 37815, 42857, 108403, 128571, 214285, 325209, 542015, 642855, 1626045, 1842851, 5528553, 9214255, 27642765]

約数ペア:

[(1, 27642765), (3, 9214255), (5, 5528553), (15, 1842851), (17, 1626045), (43, 642855), (51, 542015), (85, 325209), (129, 214285), (215, 128571), (255, 108403), (645, 42857), (731, 37815), (2193, 12605), (2521, 10965), (3655, 7563)]