20683747

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{2381}}^1$

素因数の和:2478

約数の個数: 16

約数和(自身を含む): 25382592

約数和(自身を除く): 4698845

約数列:

[1, 7, 17, 73, 119, 511, 1241, 2381, 8687, 16667, 40477, 173813, 283339, 1216691, 2954821, 20683747]

約数ペア:

[(1, 20683747), (7, 2954821), (17, 1216691), (73, 283339), (119, 173813), (511, 40477), (1241, 16667), (2381, 8687)]