20820646

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{353}}^1\times {\mathrm{383}}^1$

素因数の和:756

約数の個数: 32

約数和(自身を含む): 39149568

約数和(自身を除く): 18328922

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 353, 383, 706, 766, 2471, 2681, 3883, 4213, 4942, 5362, 7766, 8426, 27181, 29491, 54362, 58982, 135199, 270398, 946393, 1487189, 1892786, 2974378, 10410323, 20820646]

約数ペア:

[(1, 20820646), (2, 10410323), (7, 2974378), (11, 1892786), (14, 1487189), (22, 946393), (77, 270398), (154, 135199), (353, 58982), (383, 54362), (706, 29491), (766, 27181), (2471, 8426), (2681, 7766), (3883, 5362), (4213, 4942)]