20421295

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{2087}}^1$

素因数の和:2214

約数の個数: 16

約数和(自身を含む): 26058240

約数和(自身を除く): 5636945

約数列:

[1, 5, 19, 95, 103, 515, 1957, 2087, 9785, 10435, 39653, 198265, 214961, 1074805, 4084259, 20421295]

約数ペア:

[(1, 20421295), (5, 4084259), (19, 1074805), (95, 214961), (103, 198265), (515, 39653), (1957, 10435), (2087, 9785)]