21356676820

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9449857}}^1$

素因数の和:9449979

約数の個数: 24

約数和(自身を含む): 45245920104

約数和(自身を除く): 23889243284

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9449857, 18899714, 37799428, 47249285, 94498570, 188997140, 1067833841, 2135667682, 4271335364, 5339169205, 10678338410, 21356676820]

約数ペア:

[(1, 21356676820), (2, 10678338410), (4, 5339169205), (5, 4271335364), (10, 2135667682), (20, 1067833841), (113, 188997140), (226, 94498570), (452, 47249285), (565, 37799428), (1130, 18899714), (2260, 9449857)]