20815688

素因数分解:

$2^3\times {\mathrm{157}}^1\times {\mathrm{16573}}^1$

素因数の和:16736

約数の個数: 16

約数和(自身を含む): 39280380

約数和(自身を除く): 18464692

約数列:

[1, 2, 4, 8, 157, 314, 628, 1256, 16573, 33146, 66292, 132584, 2601961, 5203922, 10407844, 20815688]

約数ペア:

[(1, 20815688), (2, 10407844), (4, 5203922), (8, 2601961), (157, 132584), (314, 66292), (628, 33146), (1256, 16573)]