20815533

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{461}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 31351320

約数和(自身を除く): 10535787

約数列:

[1, 3, 9, 29, 87, 173, 261, 461, 519, 1383, 1557, 4149, 5017, 13369, 15051, 40107, 45153, 79753, 120321, 239259, 717777, 2312837, 6938511, 20815533]

約数ペア:

[(1, 20815533), (3, 6938511), (9, 2312837), (29, 717777), (87, 239259), (173, 120321), (261, 79753), (461, 45153), (519, 40107), (1383, 15051), (1557, 13369), (4149, 5017)]