21187287

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{12589}}^1$

素因数の和:12623

約数の個数: 24

約数和(自身を含む): 35352720

約数和(自身を除く): 14165433

約数列:

[1, 3, 9, 11, 17, 33, 51, 99, 153, 187, 561, 1683, 12589, 37767, 113301, 138479, 214013, 415437, 642039, 1246311, 1926117, 2354143, 7062429, 21187287]

約数ペア:

[(1, 21187287), (3, 7062429), (9, 2354143), (11, 1926117), (17, 1246311), (33, 642039), (51, 415437), (99, 214013), (153, 138479), (187, 113301), (561, 37767), (1683, 12589)]