19779978

素因数分解:

$2^1\times 3^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:822

約数の個数: 32

約数和(自身を含む): 40985280

約数和(自身を除く): 21205302

約数列:

[1, 2, 3, 6, 37, 74, 111, 139, 222, 278, 417, 641, 834, 1282, 1923, 3846, 5143, 10286, 15429, 23717, 30858, 47434, 71151, 89099, 142302, 178198, 267297, 534594, 3296663, 6593326, 9889989, 19779978]

約数ペア:

[(1, 19779978), (2, 9889989), (3, 6593326), (6, 3296663), (37, 534594), (74, 267297), (111, 178198), (139, 142302), (222, 89099), (278, 71151), (417, 47434), (641, 30858), (834, 23717), (1282, 15429), (1923, 10286), (3846, 5143)]