18663953

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1117}}^1$

素因数の和:1173

約数の個数: 24

約数和(自身を含む): 24470784

約数和(自身を除く): 5806831

約数列:

[1, 7, 11, 31, 49, 77, 217, 341, 539, 1117, 1519, 2387, 7819, 12287, 16709, 34627, 54733, 86009, 242389, 380897, 602063, 1696723, 2666279, 18663953]

約数ペア:

[(1, 18663953), (7, 2666279), (11, 1696723), (31, 602063), (49, 380897), (77, 242389), (217, 86009), (341, 54733), (539, 34627), (1117, 16709), (1519, 12287), (2387, 7819)]