21339875

素因数分解:

$5^3\times {\mathrm{79}}^1\times {\mathrm{2161}}^1$

素因数の和:2255

約数の個数: 16

約数和(自身を含む): 26981760

約数和(自身を除く): 5641885

約数列:

[1, 5, 25, 79, 125, 395, 1975, 2161, 9875, 10805, 54025, 170719, 270125, 853595, 4267975, 21339875]

約数ペア:

[(1, 21339875), (5, 4267975), (25, 853595), (79, 270125), (125, 170719), (395, 54025), (1975, 10805), (2161, 9875)]