21888139

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7759}}^1$

素因数の和:7810

約数の個数: 16

約数和(自身を含む): 27811840

約数和(自身を除く): 5923701

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7759, 54313, 100867, 240529, 706069, 1683703, 3126877, 21888139]

約数ペア:

[(1, 21888139), (7, 3126877), (13, 1683703), (31, 706069), (91, 240529), (217, 100867), (403, 54313), (2821, 7759)]