20104975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2521}}^1$

素因数の和:2571

約数の個数: 24

約数和(自身を含む): 28145520

約数和(自身を除く): 8040545

約数列:

[1, 5, 11, 25, 29, 55, 145, 275, 319, 725, 1595, 2521, 7975, 12605, 27731, 63025, 73109, 138655, 365545, 693275, 804199, 1827725, 4020995, 20104975]

約数ペア:

[(1, 20104975), (5, 4020995), (11, 1827725), (25, 804199), (29, 693275), (55, 365545), (145, 138655), (275, 73109), (319, 63025), (725, 27731), (1595, 12605), (2521, 7975)]