19954921

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2543}}^1$

素因数の和:2628

約数の個数: 16

約数和(自身を含む): 24422400

約数和(自身を除く): 4467479

約数列:

[1, 7, 19, 59, 133, 413, 1121, 2543, 7847, 17801, 48317, 150037, 338219, 1050259, 2850703, 19954921]

約数ペア:

[(1, 19954921), (7, 2850703), (19, 1050259), (59, 338219), (133, 150037), (413, 48317), (1121, 17801), (2543, 7847)]