28768532

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{42557}}^1$

素因数の和:42587

約数の個数: 18

約数和(自身を含む): 54516798

約数和(自身を除く): 25748266

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 42557, 85114, 170228, 553241, 1106482, 2212964, 7192133, 14384266, 28768532]

約数ペア:

[(1, 28768532), (2, 14384266), (4, 7192133), (13, 2212964), (26, 1106482), (52, 553241), (169, 170228), (338, 85114), (676, 42557)]