21391491

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{2243}}^1$

素因数の和:2291

約数の個数: 24

約数和(自身を含む): 33067584

約数和(自身を除く): 11676093

約数列:

[1, 3, 11, 17, 33, 51, 187, 289, 561, 867, 2243, 3179, 6729, 9537, 24673, 38131, 74019, 114393, 419441, 648227, 1258323, 1944681, 7130497, 21391491]

約数ペア:

[(1, 21391491), (3, 7130497), (11, 1944681), (17, 1258323), (33, 648227), (51, 419441), (187, 114393), (289, 74019), (561, 38131), (867, 24673), (2243, 9537), (3179, 6729)]