20993687

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{491}}^1$

素因数の和:551

約数の個数: 24

約数和(自身を含む): 25930368

約数和(自身を除く): 4936681

約数列:

[1, 11, 13, 23, 143, 169, 253, 299, 491, 1859, 3289, 3887, 5401, 6383, 11293, 42757, 70213, 82979, 124223, 146809, 912769, 1614899, 1908517, 20993687]

約数ペア:

[(1, 20993687), (11, 1908517), (13, 1614899), (23, 912769), (143, 146809), (169, 124223), (253, 82979), (299, 70213), (491, 42757), (1859, 11293), (3289, 6383), (3887, 5401)]