18997391

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1789}}^1$

素因数の和:1874

約数の個数: 16

約数和(自身を含む): 22854720

約数和(自身を除く): 3857329

約数列:

[1, 7, 37, 41, 259, 287, 1517, 1789, 10619, 12523, 66193, 73349, 463351, 513443, 2713913, 18997391]

約数ペア:

[(1, 18997391), (7, 2713913), (37, 513443), (41, 463351), (259, 73349), (287, 66193), (1517, 12523), (1789, 10619)]