66405956

素因数分解:

$2^2\times {\mathrm{809}}^1\times {\mathrm{20521}}^1$

素因数の和:21334

約数の個数: 12

約数和(自身を含む): 116359740

約数和(自身を除く): 49953784

約数列:

[1, 2, 4, 809, 1618, 3236, 20521, 41042, 82084, 16601489, 33202978, 66405956]

約数ペア:

[(1, 66405956), (2, 33202978), (4, 16601489), (809, 82084), (1618, 41042), (3236, 20521)]