81204040

素因数分解:

$2^3\times 5^1\times {\mathrm{2030101}}^1$

素因数の和:2030112

約数の個数: 16

約数和(自身を含む): 182709180

約数和(自身を除く): 101505140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2030101, 4060202, 8120404, 10150505, 16240808, 20301010, 40602020, 81204040]

約数ペア:

[(1, 81204040), (2, 40602020), (4, 20301010), (5, 16240808), (8, 10150505), (10, 8120404), (20, 4060202), (40, 2030101)]