21573591

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{1997}}^1$

素因数の和:2290

約数の個数: 16

約数和(自身を含む): 31104864

約数和(自身を除く): 9531273

約数列:

[1, 3, 13, 39, 277, 831, 1997, 3601, 5991, 10803, 25961, 77883, 553169, 1659507, 7191197, 21573591]

約数ペア:

[(1, 21573591), (3, 7191197), (13, 1659507), (39, 553169), (277, 77883), (831, 25961), (1997, 10803), (3601, 5991)]