18697861

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 23700600

約数和(自身を除く): 5002739

約数列:

[1, 7, 13, 49, 91, 149, 197, 637, 1043, 1379, 1937, 2561, 7301, 9653, 13559, 17927, 29353, 94913, 125489, 205471, 381589, 1438297, 2671123, 18697861]

約数ペア:

[(1, 18697861), (7, 2671123), (13, 1438297), (49, 381589), (91, 205471), (149, 125489), (197, 94913), (637, 29353), (1043, 17927), (1379, 13559), (1937, 9653), (2561, 7301)]