21251259

素因数分解:

$3^2\times {\mathrm{509}}^1\times {\mathrm{4639}}^1$

素因数の和:5154

約数の個数: 12

約数和(自身を含む): 30763200

約数和(自身を除く): 9511941

約数列:

[1, 3, 9, 509, 1527, 4581, 4639, 13917, 41751, 2361251, 7083753, 21251259]

約数ペア:

[(1, 21251259), (3, 7083753), (9, 2361251), (509, 41751), (1527, 13917), (4581, 4639)]