21115588

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13099}}^1$

素因数の和:13147

約数の個数: 24

約数和(自身を含む): 41081600

約数和(自身を除く): 19966012

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13099, 26198, 52396, 170287, 340574, 406069, 681148, 812138, 1624276, 5278897, 10557794, 21115588]

約数ペア:

[(1, 21115588), (2, 10557794), (4, 5278897), (13, 1624276), (26, 812138), (31, 681148), (52, 406069), (62, 340574), (124, 170287), (403, 52396), (806, 26198), (1612, 13099)]