210813220

素因数分解:

$2^2\times 5^1\times {\mathrm{10540661}}^1$

素因数の和:10540670

約数の個数: 12

約数和(自身を含む): 442707804

約数和(自身を除く): 231894584

約数列:

[1, 2, 4, 5, 10, 20, 10540661, 21081322, 42162644, 52703305, 105406610, 210813220]

約数ペア:

[(1, 210813220), (2, 105406610), (4, 52703305), (5, 42162644), (10, 21081322), (20, 10540661)]