21988757

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{5701}}^1$

素因数の和:5756

約数の個数: 16

約数和(自身を含む): 27369600

約数和(自身を除く): 5380843

約数列:

[1, 7, 19, 29, 133, 203, 551, 3857, 5701, 39907, 108319, 165329, 758233, 1157303, 3141251, 21988757]

約数ペア:

[(1, 21988757), (7, 3141251), (19, 1157303), (29, 758233), (133, 165329), (203, 108319), (551, 39907), (3857, 5701)]