20877820

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12577}}^1$

素因数の和:12669

約数の個数: 24

約数和(自身を含む): 44375184

約数和(自身を除く): 23497364

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12577, 25154, 50308, 62885, 125770, 251540, 1043891, 2087782, 4175564, 5219455, 10438910, 20877820]

約数ペア:

[(1, 20877820), (2, 10438910), (4, 5219455), (5, 4175564), (10, 2087782), (20, 1043891), (83, 251540), (166, 125770), (332, 62885), (415, 50308), (830, 25154), (1660, 12577)]