2081810

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{509}}^1$

素因数の和:925

約数の個数: 16

約数和(自身を含む): 3763800

約数和(自身を除く): 1681990

約数列:

[1, 2, 5, 10, 409, 509, 818, 1018, 2045, 2545, 4090, 5090, 208181, 416362, 1040905, 2081810]

約数ペア:

[(1, 2081810), (2, 1040905), (5, 416362), (10, 208181), (409, 5090), (509, 4090), (818, 2545), (1018, 2045)]