251007921

素因数分解:

$3^2\times {\mathrm{131}}^1\times {\mathrm{211}}^1\times {\mathrm{1009}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 367429920

約数和(自身を除く): 116421999

約数列:

[1, 3, 9, 131, 211, 393, 633, 1009, 1179, 1899, 3027, 9081, 27641, 82923, 132179, 212899, 248769, 396537, 638697, 1189611, 1916091, 27889769, 83669307, 251007921]

約数ペア:

[(1, 251007921), (3, 83669307), (9, 27889769), (131, 1916091), (211, 1189611), (393, 638697), (633, 396537), (1009, 248769), (1179, 212899), (1899, 132179), (3027, 82923), (9081, 27641)]