1800490

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{449}}^1$

素因数の和:857

約数の個数: 16

約数和(自身を含む): 3256200

約数和(自身を除く): 1455710

約数列:

[1, 2, 5, 10, 401, 449, 802, 898, 2005, 2245, 4010, 4490, 180049, 360098, 900245, 1800490]

約数ペア:

[(1, 1800490), (2, 900245), (5, 360098), (10, 180049), (401, 4490), (449, 4010), (802, 2245), (898, 2005)]