139621780

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{35437}}^1$

素因数の和:35643

約数の個数: 24

約数和(自身を含む): 294702408

約数和(自身を除く): 155080628

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 35437, 70874, 141748, 177185, 354370, 708740, 6981089, 13962178, 27924356, 34905445, 69810890, 139621780]

約数ペア:

[(1, 139621780), (2, 69810890), (4, 34905445), (5, 27924356), (10, 13962178), (20, 6981089), (197, 708740), (394, 354370), (788, 177185), (985, 141748), (1970, 70874), (3940, 35437)]