20211368

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{421}}^1$

素因数の和:797

約数の個数: 32

約数和(自身を含む): 40334760

約数和(自身を除く): 20123392

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 353, 421, 706, 842, 1412, 1684, 2824, 3368, 6001, 7157, 12002, 14314, 24004, 28628, 48008, 57256, 148613, 297226, 594452, 1188904, 2526421, 5052842, 10105684, 20211368]

約数ペア:

[(1, 20211368), (2, 10105684), (4, 5052842), (8, 2526421), (17, 1188904), (34, 594452), (68, 297226), (136, 148613), (353, 57256), (421, 48008), (706, 28628), (842, 24004), (1412, 14314), (1684, 12002), (2824, 7157), (3368, 6001)]