20766790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2659}}^1$

素因数の和:2748

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 20601530

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2659, 3905, 5318, 7810, 13295, 26590, 29249, 58498, 146245, 188789, 292490, 377578, 943945, 1887890, 2076679, 4153358, 10383395, 20766790]

約数ペア:

[(1, 20766790), (2, 10383395), (5, 4153358), (10, 2076679), (11, 1887890), (22, 943945), (55, 377578), (71, 292490), (110, 188789), (142, 146245), (355, 58498), (710, 29249), (781, 26590), (1562, 13295), (2659, 7810), (3905, 5318)]