21072820

素因数分解:

$2^2\times 5^1\times {\mathrm{599}}^1\times {\mathrm{1759}}^1$

素因数の和:2367

約数の個数: 24

約数和(自身を含む): 44352000

約数和(自身を除く): 23279180

約数列:

[1, 2, 4, 5, 10, 20, 599, 1198, 1759, 2396, 2995, 3518, 5990, 7036, 8795, 11980, 17590, 35180, 1053641, 2107282, 4214564, 5268205, 10536410, 21072820]

約数ペア:

[(1, 21072820), (2, 10536410), (4, 5268205), (5, 4214564), (10, 2107282), (20, 1053641), (599, 35180), (1198, 17590), (1759, 11980), (2396, 8795), (2995, 7036), (3518, 5990)]