21741875

素因数分解:

$5^4\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:872

約数の個数: 20

約数和(自身を含む): 27834840

約数和(自身を除く): 6092965

約数列:

[1, 5, 25, 43, 125, 215, 625, 809, 1075, 4045, 5375, 20225, 26875, 34787, 101125, 173935, 505625, 869675, 4348375, 21741875]

約数ペア:

[(1, 21741875), (5, 4348375), (25, 869675), (43, 505625), (125, 173935), (215, 101125), (625, 34787), (809, 26875), (1075, 20225), (4045, 5375)]