20956400

素因数分解:

$2^4\times 5^2\times {\mathrm{52391}}^1$

素因数の和:52409

約数の個数: 30

約数和(自身を含む): 50348712

約数和(自身を除く): 29392312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52391, 104782, 209564, 261955, 419128, 523910, 838256, 1047820, 1309775, 2095640, 2619550, 4191280, 5239100, 10478200, 20956400]

約数ペア:

[(1, 20956400), (2, 10478200), (4, 5239100), (5, 4191280), (8, 2619550), (10, 2095640), (16, 1309775), (20, 1047820), (25, 838256), (40, 523910), (50, 419128), (80, 261955), (100, 209564), (200, 104782), (400, 52391)]