158408080

素因数分解:

$2^4\times 5^1\times {\mathrm{1980101}}^1$

素因数の和:1980114

約数の個数: 20

約数和(自身を含む): 368298972

約数和(自身を除く): 209890892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1980101, 3960202, 7920404, 9900505, 15840808, 19801010, 31681616, 39602020, 79204040, 158408080]

約数ペア:

[(1, 158408080), (2, 79204040), (4, 39602020), (5, 31681616), (8, 19801010), (10, 15840808), (16, 9900505), (20, 7920404), (40, 3960202), (80, 1980101)]