19128571

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1543}}^1$

素因数の和:1591

約数の個数: 24

約数和(自身を含む): 25346304

約数和(自身を除く): 6217733

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1543, 1771, 10801, 12397, 16973, 35489, 75607, 118811, 248423, 390379, 831677, 1738961, 2732653, 19128571]

約数ペア:

[(1, 19128571), (7, 2732653), (11, 1738961), (23, 831677), (49, 390379), (77, 248423), (161, 118811), (253, 75607), (539, 35489), (1127, 16973), (1543, 12397), (1771, 10801)]