20443865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{769}}^1$

素因数の和:1196

約数の個数: 16

約数和(自身を含む): 26518800

約数和(自身を除く): 6074935

約数列:

[1, 5, 13, 65, 409, 769, 2045, 3845, 5317, 9997, 26585, 49985, 314521, 1572605, 4088773, 20443865]

約数ペア:

[(1, 20443865), (5, 4088773), (13, 1572605), (65, 314521), (409, 49985), (769, 26585), (2045, 9997), (3845, 5317)]