21700887

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11839}}^1$

素因数の和:11902

約数の個数: 16

約数和(自身を含む): 31825920

約数和(自身を除く): 10125033

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11839, 35517, 153907, 461721, 556433, 1669299, 7233629, 21700887]

約数ペア:

[(1, 21700887), (3, 7233629), (13, 1669299), (39, 556433), (47, 461721), (141, 153907), (611, 35517), (1833, 11839)]