21308157

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3571}}^1$

素因数の和:3610

約数の個数: 32

約数和(自身を含む): 36005760

約数和(自身を除く): 14697603

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 117, 153, 221, 351, 459, 663, 1989, 3571, 5967, 10713, 32139, 46423, 60707, 96417, 139269, 182121, 417807, 546363, 789191, 1253421, 1639089, 2367573, 7102719, 21308157]

約数ペア:

[(1, 21308157), (3, 7102719), (9, 2367573), (13, 1639089), (17, 1253421), (27, 789191), (39, 546363), (51, 417807), (117, 182121), (153, 139269), (221, 96417), (351, 60707), (459, 46423), (663, 32139), (1989, 10713), (3571, 5967)]