20555536

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21061}}^1$

素因数の和:21130

約数の個数: 20

約数和(自身を含む): 40481164

約数和(自身を除く): 19925628

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21061, 42122, 84244, 168488, 336976, 1284721, 2569442, 5138884, 10277768, 20555536]

約数ペア:

[(1, 20555536), (2, 10277768), (4, 5138884), (8, 2569442), (16, 1284721), (61, 336976), (122, 168488), (244, 84244), (488, 42122), (976, 21061)]