4032020

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^2$

素因数の和:907

約数の個数: 18

約数和(自身を含む): 8486142

約数和(自身を除く): 4454122

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 4490, 8980, 201601, 403202, 806404, 1008005, 2016010, 4032020]

約数ペア:

[(1, 4032020), (2, 2016010), (4, 1008005), (5, 806404), (10, 403202), (20, 201601), (449, 8980), (898, 4490), (1796, 2245)]