81328040

素因数分解:

$2^3\times 5^1\times {\mathrm{2033201}}^1$

素因数の和:2033212

約数の個数: 16

約数和(自身を含む): 182988180

約数和(自身を除く): 101660140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2033201, 4066402, 8132804, 10166005, 16265608, 20332010, 40664020, 81328040]

約数ペア:

[(1, 81328040), (2, 40664020), (4, 20332010), (5, 16265608), (8, 10166005), (10, 8132804), (20, 4066402), (40, 2033201)]