21321553

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 26082720

約数和(自身を除く): 4761167

約数列:

[1, 11, 17, 19, 187, 209, 289, 323, 353, 3179, 3553, 3883, 5491, 6001, 6707, 60401, 66011, 73777, 102017, 114019, 1122187, 1254209, 1938323, 21321553]

約数ペア:

[(1, 21321553), (11, 1938323), (17, 1254209), (19, 1122187), (187, 114019), (209, 102017), (289, 73777), (323, 66011), (353, 60401), (3179, 6707), (3553, 6001), (3883, 5491)]