21107621

素因数分解:

${\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{443}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 23016960

約数和(自身を除く): 1909339

約数列:

[1, 29, 31, 53, 443, 899, 1537, 1643, 12847, 13733, 23479, 47647, 398257, 680891, 727849, 21107621]

約数ペア:

[(1, 21107621), (29, 727849), (31, 680891), (53, 398257), (443, 47647), (899, 23479), (1537, 13733), (1643, 12847)]