20998726

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{51721}}^1$

素因数の和:51759

約数の個数: 16

約数和(自身を含む): 37239840

約数和(自身を除く): 16241114

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 51721, 103442, 362047, 724094, 1499909, 2999818, 10499363, 20998726]

約数ペア:

[(1, 20998726), (2, 10499363), (7, 2999818), (14, 1499909), (29, 724094), (58, 362047), (203, 103442), (406, 51721)]