20217548

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{1549}}^1$

素因数の和:1817

約数の個数: 24

約数和(自身を含む): 38278800

約数和(自身を除く): 18061252

約数列:

[1, 2, 4, 13, 26, 52, 251, 502, 1004, 1549, 3098, 3263, 6196, 6526, 13052, 20137, 40274, 80548, 388799, 777598, 1555196, 5054387, 10108774, 20217548]

約数ペア:

[(1, 20217548), (2, 10108774), (4, 5054387), (13, 1555196), (26, 777598), (52, 388799), (251, 80548), (502, 40274), (1004, 20137), (1549, 13052), (3098, 6526), (3263, 6196)]