20926690

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72161}}^1$

素因数の和:72197

約数の個数: 16

約数和(自身を含む): 38967480

約数和(自身を除く): 18040790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72161, 144322, 360805, 721610, 2092669, 4185338, 10463345, 20926690]

約数ペア:

[(1, 20926690), (2, 10463345), (5, 4185338), (10, 2092669), (29, 721610), (58, 360805), (145, 144322), (290, 72161)]