19818740

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{11939}}^1$

素因数の和:12031

約数の個数: 24

約数和(自身を含む): 42124320

約数和(自身を除く): 22305580

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 11939, 23878, 47756, 59695, 119390, 238780, 990937, 1981874, 3963748, 4954685, 9909370, 19818740]

約数ペア:

[(1, 19818740), (2, 9909370), (4, 4954685), (5, 3963748), (10, 1981874), (20, 990937), (83, 238780), (166, 119390), (332, 59695), (415, 47756), (830, 23878), (1660, 11939)]