20615804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7681}}^1$

素因数の和:7757

約数の個数: 24

約数和(自身を含む): 40007856

約数和(自身を除く): 19392052

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 7681, 15362, 30724, 84491, 168982, 337964, 468541, 937082, 1874164, 5153951, 10307902, 20615804]

約数ペア:

[(1, 20615804), (2, 10307902), (4, 5153951), (11, 1874164), (22, 937082), (44, 468541), (61, 337964), (122, 168982), (244, 84491), (671, 30724), (1342, 15362), (2684, 7681)]