2782810

素因数分解:

$2^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{661}}^1$

素因数の和:1089

約数の個数: 16

約数和(自身を含む): 5028552

約数和(自身を除く): 2245742

約数列:

[1, 2, 5, 10, 421, 661, 842, 1322, 2105, 3305, 4210, 6610, 278281, 556562, 1391405, 2782810]

約数ペア:

[(1, 2782810), (2, 1391405), (5, 556562), (10, 278281), (421, 6610), (661, 4210), (842, 3305), (1322, 2105)]