81954945

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 145971072

約数和(自身を除く): 64016127

約数列:

[1, 3, 5, 9, 15, 45, 71, 113, 213, 227, 339, 355, 565, 639, 681, 1017, 1065, 1135, 1695, 2043, 3195, 3405, 5085, 8023, 10215, 16117, 24069, 25651, 40115, 48351, 72207, 76953, 80585, 120345, 128255, 145053, 230859, 241755, 361035, 384765, 725265, 1154295, 1821221, 5463663, 9106105, 16390989, 27318315, 81954945]

約数ペア:

[(1, 81954945), (3, 27318315), (5, 16390989), (9, 9106105), (15, 5463663), (45, 1821221), (71, 1154295), (113, 725265), (213, 384765), (227, 361035), (339, 241755), (355, 230859), (565, 145053), (639, 128255), (681, 120345), (1017, 80585), (1065, 76953), (1135, 72207), (1695, 48351), (2043, 40115), (3195, 25651), (3405, 24069), (5085, 16117), (8023, 10215)]