21991879025

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{12389791}}^1$

素因数の和:12389872

約数の個数: 12

約数和(自身を含む): 27654015744

約数和(自身を除く): 5662136719

約数列:

[1, 5, 25, 71, 355, 1775, 12389791, 61948955, 309744775, 879675161, 4398375805, 21991879025]

約数ペア:

[(1, 21991879025), (5, 4398375805), (25, 879675161), (71, 309744775), (355, 61948955), (1775, 12389791)]