20407550

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{6691}}^1$

素因数の和:6764

約数の個数: 24

約数和(自身を含む): 38586072

約数和(自身を除く): 18178522

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 305, 610, 1525, 3050, 6691, 13382, 33455, 66910, 167275, 334550, 408151, 816302, 2040755, 4081510, 10203775, 20407550]

約数ペア:

[(1, 20407550), (2, 10203775), (5, 4081510), (10, 2040755), (25, 816302), (50, 408151), (61, 334550), (122, 167275), (305, 66910), (610, 33455), (1525, 13382), (3050, 6691)]