20651675

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6827}}^1$

素因数の和:6859

約数の個数: 18

約数和(自身を含む): 28151844

約数和(自身を除く): 7500169

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6827, 34135, 75097, 170675, 375485, 826067, 1877425, 4130335, 20651675]

約数ペア:

[(1, 20651675), (5, 4130335), (11, 1877425), (25, 826067), (55, 375485), (121, 170675), (275, 75097), (605, 34135), (3025, 6827)]