20804954005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{877661}}^1$

素因数の和:878108

約数の個数: 16

約数和(自身を含む): 27298798848

約数和(自身を除く): 6493844843

約数列:

[1, 5, 11, 55, 431, 2155, 4741, 23705, 877661, 4388305, 9654271, 48271355, 378271891, 1891359455, 4160990801, 20804954005]

約数ペア:

[(1, 20804954005), (5, 4160990801), (11, 1891359455), (55, 378271891), (431, 48271355), (2155, 9654271), (4741, 4388305), (23705, 877661)]