20554804

素因数分解:

$2^2\times {\mathrm{61}}^2\times {\mathrm{1381}}^1$

素因数の和:1507

約数の個数: 18

約数和(自身を含む): 36596742

約数和(自身を除く): 16041938

約数列:

[1, 2, 4, 61, 122, 244, 1381, 2762, 3721, 5524, 7442, 14884, 84241, 168482, 336964, 5138701, 10277402, 20554804]

約数ペア:

[(1, 20554804), (2, 10277402), (4, 5138701), (61, 336964), (122, 168482), (244, 84241), (1381, 14884), (2762, 7442), (3721, 5524)]