28209155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{18869}}^1$

素因数の和:18910

約数の個数: 16

約数和(自身を含む): 38041920

約数和(自身を除く): 9832765

約数列:

[1, 5, 13, 23, 65, 115, 299, 1495, 18869, 94345, 245297, 433987, 1226485, 2169935, 5641831, 28209155]

約数ペア:

[(1, 28209155), (5, 5641831), (13, 2169935), (23, 1226485), (65, 433987), (115, 245297), (299, 94345), (1495, 18869)]