19690879

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 22649760

約数和(自身を除く): 2958881

約数列:

[1, 13, 17, 139, 221, 641, 1807, 2363, 8333, 10897, 30719, 89099, 141661, 1158287, 1514683, 19690879]

約数ペア:

[(1, 19690879), (13, 1514683), (17, 1158287), (139, 141661), (221, 89099), (641, 30719), (1807, 10897), (2363, 8333)]