21720458

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{33623}}^1$

素因数の和:33661

約数の個数: 16

約数和(自身を含む): 36313920

約数和(自身を除く): 14593462

約数列:

[1, 2, 17, 19, 34, 38, 323, 646, 33623, 67246, 571591, 638837, 1143182, 1277674, 10860229, 21720458]

約数ペア:

[(1, 21720458), (2, 10860229), (17, 1277674), (19, 1143182), (34, 638837), (38, 571591), (323, 67246), (646, 33623)]